MediaWiki/maintenance/benchmarks/bench_if_switch.php

<?php
/**
 * Benchmark if elseif... versus switch case.
 *
 * This come from r75429 message
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Benchmark
 * @author  Platonides
 */

require_once __DIR__ . '/Benchmarker.php';

/**
 * Maintenance script that benchmark if elseif... versus switch case.
 *
 * @ingroup Maintenance
 */
class BenchIfSwitch extends Benchmarker {
	public function __construct() {
		parent::__construct();
		$this->addDescription( 'Benchmark if elseif... versus switch case.' );
	}

	public function execute() {
		$this->bench( [
			[ 'function' => [ $this, 'doElseIf' ] ],
			[ 'function' => [ $this, 'doSwitch' ] ],
		] );
		print $this->getFormattedResults();
	}

	// bench function 1
	function doElseIf() {
		$a = 'z';
		if ( $a == 'a' ) {
		} elseif ( $a == 'b' ) {
		} elseif ( $a == 'c' ) {
		} elseif ( $a == 'd' ) {
		} elseif ( $a == 'e' ) {
		} elseif ( $a == 'f' ) {
		} elseif ( $a == 'g' ) {
		} elseif ( $a == 'h' ) {
		} elseif ( $a == 'i' ) {
		} elseif ( $a == 'j' ) {
		} elseif ( $a == 'k' ) {
		} elseif ( $a == 'l' ) {
		} elseif ( $a == 'm' ) {
		} elseif ( $a == 'n' ) {
		} elseif ( $a == 'o' ) {
		} elseif ( $a == 'p' ) {
		} else {
		}
	}

	// bench function 2
	function doSwitch() {
		$a = 'z';
		switch ( $a ) {
			case 'b':
				break;
			case 'c':
				break;
			case 'd':
				break;
			case 'e':
				break;
			case 'f':
				break;
			case 'g':
				break;
			case 'h':
				break;
			case 'i':
				break;
			case 'j':
				break;
			case 'k':
				break;
			case 'l':
				break;
			case 'm':
				break;
			case 'n':
				break;
			case 'o':
				break;
			case 'p':
				break;
			default:
		}
	}
}

$maintClass = 'BenchIfSwitch';
require_once RUN_MAINTENANCE_IF_MAIN;