81 lines
2.2 KiB
PHP
81 lines
2.2 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use PhpMyAdmin\Utils\SessionCache;
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/**
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* Statement resource usage.
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*/
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final class Profiling
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{
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public static function isSupported(DatabaseInterface $dbi): bool
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{
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if (SessionCache::has('profiling_supported')) {
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return (bool) SessionCache::get('profiling_supported');
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}
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/**
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* 5.0.37 has profiling but for example, 5.1.20 does not
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* (avoid a trip to the server for MySQL before 5.0.37)
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* and do not set a constant as we might be switching servers
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*/
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if ($dbi->fetchValue('SELECT @@have_profiling')) {
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SessionCache::set('profiling_supported', true);
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return true;
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}
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SessionCache::set('profiling_supported', false);
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return false;
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}
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public static function enable(DatabaseInterface $dbi): void
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{
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if (! isset($_SESSION['profiling']) || ! self::isSupported($dbi)) {
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return;
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}
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$dbi->query('SET PROFILING=1;');
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}
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/** @return array<string, string>|null */
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public static function getInformation(DatabaseInterface $dbi): ?array
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{
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if (! isset($_SESSION['profiling']) || ! self::isSupported($dbi)) {
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return null;
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}
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return $dbi->fetchResult('SHOW PROFILE;');
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}
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/**
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* Check if profiling was requested and remember it.
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*/
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public static function check(DatabaseInterface $dbi, ResponseRenderer $response): void
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{
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if (isset($_REQUEST['profiling']) && self::isSupported($dbi)) {
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$_SESSION['profiling'] = true;
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} elseif (isset($_REQUEST['profiling_form'])) {
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// the checkbox was unchecked
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unset($_SESSION['profiling']);
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}
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if (! isset($_SESSION['profiling'])) {
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return;
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}
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$scripts = $response->getHeader()->getScripts();
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$scripts->addFiles([
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'chart.js',
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'vendor/jqplot/jquery.jqplot.js',
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'vendor/jqplot/plugins/jqplot.pieRenderer.js',
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'vendor/jqplot/plugins/jqplot.highlighter.js',
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'vendor/jquery/jquery.tablesorter.js',
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]);
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}
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}
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