friendica/include/dbm.php

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