root/trunk/tests/benchmark_str_replace.php

<?PHP
/**
 * simple benchmark to check whether looking for a string to replace is faster
 * than replacing it directly. It needs the PEAR::Benchmark_Timer class.
 *
 * $Id$
 *
 * @package        patForms
 * @subpackage    Tests
 * @author        Sebastian Mordziol <argh@php-tool.net>
 */
 
   /**
    * uses the PEAR::Benchmark_Timer class
    */
    require_once 'Benchmark/Timer.php';

    $string    =    'RadioGroup_Option';
    $timer    =    &new Benchmark_Timer();
    
    $timer->start();

    // strpos
    for( $i = 1; $i <= 5000; $i++ )
    {
        if( strpos( $string, '_' ) !== false )
        {
        }
    }
    $timer->setMarker( 'strpos' );

    // strstr
    for( $i = 1; $i <= 5000; $i++ )
    {
        if( strstr( $string, '_' ) !== false )
        {
        }
    }
    $timer->setMarker( 'strstr' );

    // stristr
    for( $i = 1; $i <= 5000; $i++ )
    {
        if( stristr( $string, '_' ) !== false )
        {
        }
    }
    $timer->setMarker( 'stristr' );

    // str_replace
    for( $i = 1; $i <= 5000; $i++ )
    {
        str_replace( '_', '/', $string );
    }
    $timer->setMarker( 'str_replace' );

    $timer->stop();
    $timer->display();
?>