133 lines
2.8 KiB
PHP
133 lines
2.8 KiB
PHP
<?php
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/**
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* This file is part of CodeIgniter 4 framework.
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*
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* (c) CodeIgniter Foundation <admin@codeigniter.com>
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*
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* For the full copyright and license information, please view
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* the LICENSE file that was distributed with this source code.
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*/
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namespace CodeIgniter\Debug;
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use Closure;
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/**
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* Iterator for debugging.
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*/
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class Iterator
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{
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/**
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* Stores the tests that we are to run.
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*
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* @var array
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*/
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protected $tests = [];
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/**
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* Stores the results of each of the tests.
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*
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* @var array
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*/
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protected $results = [];
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/**
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* Adds a test to run.
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*
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* Tests are simply closures that the user can define any sequence of
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* things to happen during the test.
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*
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* @param Closure(): mixed $closure
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*
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* @return $this
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*/
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public function add(string $name, Closure $closure)
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{
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$name = strtolower($name);
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$this->tests[$name] = $closure;
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return $this;
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}
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/**
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* Runs through all of the tests that have been added, recording
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* time to execute the desired number of iterations, and the approximate
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* memory usage used during those iterations.
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*
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* @return string|null
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*/
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public function run(int $iterations = 1000, bool $output = true)
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{
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foreach ($this->tests as $name => $test) {
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// clear memory before start
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gc_collect_cycles();
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$start = microtime(true);
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$startMem = $maxMemory = memory_get_usage(true);
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for ($i = 0; $i < $iterations; $i++) {
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$result = $test();
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$maxMemory = max($maxMemory, memory_get_usage(true));
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unset($result);
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}
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$this->results[$name] = [
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'time' => microtime(true) - $start,
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'memory' => $maxMemory - $startMem,
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'n' => $iterations,
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];
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}
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if ($output) {
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return $this->getReport();
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}
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return null;
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}
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/**
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* Get results.
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*/
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public function getReport(): string
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{
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if ($this->results === []) {
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return 'No results to display.';
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}
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helper('number');
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// Template
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$tpl = '<table>
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<thead>
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<tr>
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<td>Test</td>
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<td>Time</td>
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<td>Memory</td>
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</tr>
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</thead>
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<tbody>
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{rows}
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</tbody>
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</table>';
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$rows = '';
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foreach ($this->results as $name => $result) {
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$memory = number_to_size($result['memory'], 4);
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$rows .= "<tr>
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<td>{$name}</td>
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<td>" . number_format($result['time'], 4) . "</td>
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<td>{$memory}</td>
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</tr>";
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}
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$tpl = str_replace('{rows}', $rows, $tpl);
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return $tpl . '<br/>';
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}
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}
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