114 lines
2.8 KiB
PHP
114 lines
2.8 KiB
PHP
<?php
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/**
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* @brief This class contain functions for the database management
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*
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*/
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class dbm {
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/**
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* @brief Return a list of database processes
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*
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* @return array
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* 'list' => List of processes, separated in their different states
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* 'amount' => Number of concurrent database processes
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*/
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public static function processlist() {
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$r = q("SHOW PROCESSLIST");
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$s = array();
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$processes = 0;
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$states = array();
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foreach ($r AS $process) {
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$state = trim($process["State"]);
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// Filter out all non blocking processes
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if (!in_array($state, array("", "init", "statistics", "updating"))) {
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++$states[$state];
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++$processes;
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}
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}
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$statelist = "";
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foreach ($states AS $state => $usage) {
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if ($statelist != "")
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$statelist .= ", ";
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$statelist .= $state.": ".$usage;
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}
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return(array("list" => $statelist, "amount" => $processes));
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}
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/**
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* Checks if $array is a filled array with at least one entry.
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*
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* @param $array mixed A filled array with at least one entry
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* @return Whether $array is a filled array
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*/
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public static function is_result($array) {
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// It could be a return value from an update statement
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if (is_bool($array)) {
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return $array;
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}
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return (is_array($array) && count($array) > 0);
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}
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/**
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* @brief Callback function for "esc_array"
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*
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* @param mixed $value Array value
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* @param string $key Array key
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* @param boolean $add_quotation add quotation marks for string values
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*/
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private static function esc_array_callback(&$value, $key, $add_quotation) {
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if (!$add_quotation) {
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if (is_bool($value)) {
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$value = ($value ? '1' : '0');
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} else {
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$value = dbesc($value);
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}
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return;
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}
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if (is_bool($value)) {
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$value = ($value ? 'true' : 'false');
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} elseif (is_float($value) OR is_integer($value)) {
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$value = (string)$value;
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} else {
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$value = "'".dbesc($value)."'";
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}
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}
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/**
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* @brief Escapes a whole array
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*
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* @param mixed $arr Array with values to be escaped
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* @param boolean $add_quotation add quotation marks for string values
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*/
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public static function esc_array(&$arr, $add_quotation = false) {
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array_walk($arr, 'self::esc_array_callback', $add_quotation);
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}
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/**
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* Checks Converts any date string into a SQL compatible date string
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*
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* @param string $date a date string in any format
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* @return string SQL style date string
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*/
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public static function date($date = 'now') {
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$timestamp = strtotime($date);
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// Workaround for 3.5.1
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if ($timestamp < -62135596800) {
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return '0000-00-00 00:00:00';
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}
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// The above will be removed in 3.5.2
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// The following will then be enabled
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// Don't allow lower date strings as '0001-01-01 00:00:00'
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//if ($timestamp < -62135596800) {
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// $timestamp = -62135596800;
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//}
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return date('Y-m-d H:i:s', $timestamp);
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}
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}
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?>
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