469 lines
10 KiB
PHP
469 lines
10 KiB
PHP
<?php
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/**
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* @file database.php
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* @date 2018-04-13
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* @author Go Namhyeon <gnh1201@gmail.com>
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* @brief Database module
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*/
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if(!function_exists("get_db_connect")) {
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function get_db_connect($a=3, $b=0) {
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$config = get_config();
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$conn = false;
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try {
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$conn = new PDO(
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sprintf(
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"mysql:host=%s;dbname=%s;charset=utf8",
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$config['db_host'],
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$config['db_name']
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),
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$config['db_username'],
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$config['db_password'],
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array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8")
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);
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//$conn->query("SET NAMES 'utf8'");
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} catch(Exception $e) {
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if($b > $a) {
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set_error($e->getMessage());
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show_errors();
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} else {
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$b++;
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sleep(0.03);
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$conn = get_db_connect($a, $b);
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}
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}
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return $conn;
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}
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}
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if(!function_exists("exec_stmt_query")) {
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function exec_stmt_query($sql, $bind=array()) {
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$stmt = get_db_stmt($sql, $bind);
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$stmt->execute();
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return $stmt;
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}
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}
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if(!function_exists("get_dbc_object")) {
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function get_dbc_object($renew=false) {
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$dbc = get_scope("dbc");
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if($renew) {
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set_scope("dbc", get_db_connect());
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}
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return get_scope("dbc");
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}
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}
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if(!function_exists("get_db_binded_sql")) {
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function get_db_binded_sql($sql, $bind) {
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if(count($bind) > 0) {
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$bind_keys = array_keys($bind);
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usort($bind_keys, function($a, $b) {
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return strlen($b) - strlen($a);
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});
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foreach($bind_keys as $k) {
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$sql = str_replace(":" . $k, "'" . addslashes($bind[$k]) . "'", $sql);
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}
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}
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return $sql;
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}
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}
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if(!function_exists("get_db_stmt")) {
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function get_db_stmt($sql, $bind=array(), $bind_pdo=false, $show_sql=false) {
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$sql = !$bind_pdo ? get_db_binded_sql($sql, $bind) : $sql;
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$stmt = get_dbc_object()->prepare($sql);
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if($show_sql) {
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set_error($sql, "DATABASE-SQL");
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show_errors(false);
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}
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// bind parameter by PDO statement
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if($bind_pdo) {
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if(count($bind) > 0) {
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foreach($bind as $k=>$v) {
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$stmt->bindParam(':' . $k, $v);
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}
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}
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}
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return $stmt;
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}
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}
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if(!function_exists("get_db_last_id")) {
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function get_db_last_id() {
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return get_dbc_object()->lastInsertId();
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}
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}
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if(!function_exists("exec_db_query")) {
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function exec_db_query($sql, $bind=array(), $options=array()) {
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$dbc = get_dbc_object();
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$validOptions = array();
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$optionAvailables = array("is_check_count", "is_commit", "display_error", "show_debug", "show_sql");
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foreach($optionAvailables as $opt) {
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if(!array_key_empty($opt, $options)) {
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$validOptions[$opt] = $options[$opt];
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} else {
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$validOptions[$opt] = false;
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}
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}
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extract($validOptions);
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$flag = false;
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$is_insert_with_bind = false;
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$sql_terms = explode(" ", $sql);
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if($sql_terms[0] == "insert") {
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$stmt = get_db_stmt($sql);
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if(count($bind) > 0) {
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$is_insert_with_bind = true;
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}
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} else {
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if($show_sql) {
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$stmt = get_db_stmt($sql, $bind, false, true);
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} else {
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$stmt = get_db_stmt($sql, $bind);
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}
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}
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if($is_commit) {
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$dbc->beginTransaction();
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}
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// execute statement (insert->execute(bind) or if not, sql->bind->execute)
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$stmt_executed = $is_insert_with_bind ? $stmt->execute($bind) : $stmt->execute();
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if($show_debug) {
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$stmt->debugDumpParams();
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}
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if($display_error) {
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$error_info = $stmt->errorInfo();
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if(count($error_info) > 0) {
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foreach($error_info as $err) {
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set_error($err, "DATABASE-ERROR");
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}
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}
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show_errors(false);
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}
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if($is_check_count == true) {
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if($stmt_executed && $stmt->rowCount() > 0) {
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$flag = true;
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}
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} else {
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$flag = $stmt_executed;
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}
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if($is_commit) {
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$dbc->commit();
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}
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if($flag === false) {
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set_error(md5($sql), "DATABASE-QUERY-FAILURE");
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}
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return $flag;
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}
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}
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if(!function_exists("exec_db_fetch_all")) {
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function exec_db_fetch_all($sql, $bind=array()) {
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$rows = array();
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$stmt = get_db_stmt($sql, $bind);
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if($stmt->execute() && $stmt->rowCount() > 0) {
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$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
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}
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return $rows;
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}
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}
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if(!function_exists("exec_db_fetch")) {
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function exec_db_fetch($sql, $bind=array(), $start=0, $bind_limit=false) {
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$fetched = NULL;
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$rows = array();
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if($bind_limit == true) {
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$sql = $sql . " limit 1";
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}
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$rows = exec_db_fetch_all($sql, $bind);
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if(count($rows) > $start) {
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$idx = 0;
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foreach($rows as $row) {
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if($idx >= $start) {
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$fetched = $row;
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break;
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}
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$idx++;
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}
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}
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return $fetched;
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}
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}
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if(!function_exists("get_page_range")) {
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function get_page_range($page=1, $limit=0) {
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$append_sql = "";
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if($page < 1) {
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$page = 1;
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}
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if($limit > 0) {
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$record_start = ($page - 1) * $limit;
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$record_end = $record_start + $limit - 1;
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$append_sql .= sprintf(" limit %s, %s", $record_start, $record_end);
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}
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return $append_sql;
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}
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}
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if(!function_exists("get_bind_to_sql_insert")) {
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function get_bind_to_sql_insert($tablename, $bind) {
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$bind_keys = array_keys($bind);
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$sql = "insert into %s (%s) values (:%s)";
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$s1 = $tablename;
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$s2 = implode(", ", $bind_keys);
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$s3 = implode(", :", $bind_keys);
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$sql = sprintf($sql, $s1, $s2, $s3);
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return $sql;
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}
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}
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if(!function_exists("get_bind_to_sql_where")) {
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// warning: variable k is not protected. do not use variable k and external variable without filter
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function get_bind_to_sql_where($bind, $excludes=array()) {
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$sql_where = "";
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foreach($bind as $k=>$v) {
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if(!in_array($k, $excludes)) {
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$sql_where .= sprintf(" and %s = :%s", $k, $k);
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}
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}
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return $sql_where;
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}
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}
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if(!function_exists("get_bind_to_sql_update_set")) {
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// warning: variable k is not protected. do not use variable k and external variable without filter
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function get_bind_to_sql_update_set($bind, $excludes=array()) {
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$sql_update_set = "";
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$set_items = "";
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foreach($bind as $k=>$v) {
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if(!in_array($k, $excludes)) {
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$set_items[] = sprintf("%s = :%s", $k, $k);
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}
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}
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$sql_update_set = implode(", ", $set_items);
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return $sql_update_set;
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}
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}
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if(!function_exists("get_bind_to_sql_select")) {
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// warning: variable k is not protected. do not use variable k and external variable without filter
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function get_bind_to_sql_select($tablename, $bind=array(), $options=array()) {
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$sql = "select %s from %s where 1 %s %s %s";
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// s1: select fields
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$s1 = "*";
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if(!array_key_empty("fieldnames", $options)) {
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$s1 .= (count($options['fieldnames']) > 0) ? implode(", ", $options['fieldnames']) : "*";
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} elseif(array_key_equals("getcnt", $options, true)) {
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$s1 .= "count(*) as cnt";
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} elseif(!array_key_empty("getsum", $options)) {
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$s1 .= sprintf("sum(%s) as sum", $options['getsum']);
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}
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// s2: set table name
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$s2 = "";
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if(!empty($tablename)) {
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$s2 .= $tablename;
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} else {
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set_error("tablename can not empty");
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show_errors();
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}
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// s3: fields of where clause
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$s3 = get_bind_to_sql_where($bind);
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if(!array_multikey_empty(array("settimefield", "setminutes"), $options)) {
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$s3 .= get_bind_to_sql_past_minutes($options['settimefield'], $options['setminutes']);
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}
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if(!array_key_empty("setwheres", $options)) {
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if(is_array($options['setwheres'])) {
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foreach($options['setwheres'] as $opts) {
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$s3 .= check_is_string_not_array($opts) ? sprintf(" and (%s)", $opts) : "";
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}
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}
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}
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// s4: set orders
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$s4 = "";
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$s4a = array();
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if(!array_key_empty("setorders", $options)) {
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if(is_array($options['setorders'])) {
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$s4 .= "order by ";
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foreach($options['setorders'] as $opts) {
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if(check_is_string_not_array($opts)) {
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$s4a[] = $opts;
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}
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}
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$s4 .= implode(", ", $s4a);
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}
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}
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// s5: set page and limit
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$s5 = "";
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if(!array_multikey_empty(array("setpage", "setlimit"), $options)) {
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$s5 .= get_page_range($options['setpage'], $options['setlimit']);
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}
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// sql: make completed sql
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$sql = sprintf($sql, $s1, $s2, $s3, $s4, $s5);
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return $sql;
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}
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}
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if(!function_exists("get_bind_to_sql_update")) {
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function get_bind_to_sql_update($tablename, $bind, $filters=array(), $options=array()) {
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// process filters
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$excludes = array();
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$bind_wheres = array();
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foreach($bind as $k=>$v) {
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if(!array_key_empty($k, $filters)) {
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if($filters[$k] === true) {
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$bind_wheres[$k] = $v;
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$excludes[] = $k;
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} else {
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$bind_wheres[$k] = $filters[$k];
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}
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}
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}
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// make sql 'where' clause
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$sql_where = get_db_binded_sql(get_bind_to_sql_where($bind_wheres), $bind_wheres);
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if(!array_key_empty("sql_where", $options)) {
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$sql_where .= $options['sql_where'];
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}
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// make sql 'update set' clause
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$sql_update_set = get_bind_to_sql_update_set($bind, $excludes);
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// make completed sql statement
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$sql = sprintf("update %s set %s where 1 %s", $tablename, $sql_update_set, $sql_where);
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return $sql;
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}
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}
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if(!function_exists("get_bind_to_sql_delete")) {
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function get_bind_to_sql_delete($tablename, $bind, $options=array()) {
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$sql = "delete from %s where 1" . get_bind_to_sql_where($bind);
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return $sql;
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}
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}
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if(!function_exists("get_bind_to_sql_past_minutes")) {
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function get_bind_to_sql_past_minutes($fieldname, $minutes=5) {
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$sql_past_minutes = "";
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if($minutes > 0) {
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$sql_past_minutes = sprintf(" and %s > DATE_SUB(now(), INTERVAL %d MINUTE)", $fieldname, $minutes);
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}
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return $sql_past_minutes;
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}
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}
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// SQL eXtensible
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if(!function_exists("get_bind_to_sqlx")) {
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function get_bind_to_sqlx($filename, $bind, $options=array()) {
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$result = false;
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$sql = read_storage_file(get_file_name($filename, "sqlx"), array(
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"storage_type" => "sqlx"
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));
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if(!empty($sql)) {
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$result = get_db_binded_sql($sql, $bind);
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}
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return $result;
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}
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}
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// alias sql_query from exec_db_query
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if(!function_exists("sql_query")) {
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function sql_query($sql, $bind=array()) {
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return exec_db_query($sql, $bind);
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}
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}
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// get timediff
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if(!function_exists("get_timediff_on_query")) {
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function get_timediff_on_query($a, $b) {
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$dt = 0;
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$sql = "select timediff(:a, :b) as dt";
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$bind = array(
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"a" => $a,
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"b" => $b
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);
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$row = exec_db_fetch($sql, $bind);
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$dt = get_value_in_array("dt", $row, $dt);
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return $dt;
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}
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}
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// get assoc from json raw data
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if(!function_exists("json_decode_to_assoc")) {
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function json_decode_to_assoc($data) {
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$result = array();
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$func_rules = array(
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"json_decode" => "Dose not exists json_decode function",
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"json_last_error" => "Dose not exists json_last_error function",
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);
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if(check_function_exists($func_rules)) {
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$obj = @json_decode($data, true);
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$result = (@json_last_error() === 0) ? $obj : $result;
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}
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return $result;
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}
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}
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// close db connection
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if(!function_exists("close_db_connect")) {
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function close_db_connect() {
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$dbc = get_scope("dbc");
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$dbc->close();
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set_scope("dbc", null);
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}
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}
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// set scope dbc
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set_scope("dbc", get_db_connect());
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