Ticket #17670: get_page_by_path-benchmark.php

<?php

error_reporting( E_ALL );

$trials = 1000000;

$data = array(
        array(
                'result' => 172,
                'inputs' => array(
                        'a:3:{i:174;O:8:"stdClass":3:{s:2:"ID";s:3:"174";s:9:"post_name";s:7:"level-1";s:11:"post_parent";s:1:"0";}i:173;O:8:"stdClass":3:{s:2:"ID";s:3:"173";s:9:"post_name";s:7:"level-2";s:11:"post_parent";s:3:"174";}i:172;O:8:"stdClass":3:{s:2:"ID";s:3:"172";s:9:"post_name";s:7:"level-3";s:11:"post_parent";s:3:"173";}}',
                        'a:3:{i:0;s:7:"level-1";i:1;s:7:"level-2";i:2;s:7:"level-3";}',
                ),
        ),
        array(
                'result' => 600,
                'inputs' => array(
                        'a:1:{i:600;O:8:"stdClass":3:{s:2:"ID";s:3:"600";s:9:"post_name";s:4:"blog";s:11:"post_parent";s:1:"0";}}',
                        'a:1:{i:0;s:4:"blog";}',
                ),
        ),
        array(
                'result' => 568,
                'inputs' => array(
                        'a:2:{i:12;O:8:"stdClass":3:{s:2:"ID";s:2:"12";s:9:"post_name";s:5:"about";s:11:"post_parent";s:1:"0";}i:568;O:8:"stdClass":3:{s:2:"ID";s:3:"568";s:9:"post_name";s:17:"about-da-children";s:11:"post_parent";s:2:"12";}}',
                        'a:2:{i:0;s:5:"about";i:1;s:17:"about-da-children";}',
                ),
        ),
        array(
                'result' => 145,
                'inputs' => array(
                        'a:2:{i:145;O:8:"stdClass":3:{s:2:"ID";s:3:"145";s:9:"post_name";s:12:"child-page-2";s:11:"post_parent";s:3:"953";}i:953;O:8:"stdClass":3:{s:2:"ID";s:3:"953";s:9:"post_name";s:11:"parent-page";s:11:"post_parent";s:1:"0";}}',
                        'a:2:{i:0;s:11:"parent-page";i:1;s:12:"child-page-2";}',
                ),
        ),
);

$functions = array( 'get_page_by_path', 'get_page_by_path_simple_fix', 'get_page_by_path_rewritten' );



foreach ( $data as $index => $set )
        foreach ( $set['inputs'] as $input_index => $input )
                $data[$index]['inputs'][$input_index] = unserialize( $input );


foreach ( $functions as $function ) {
        $errors = 0;
        
        foreach ( $data as $index => $set ) {
                $result = @call_user_func_array( $function, $set['inputs'] );
                
                if ( $result != $set['result'] ) {
                        echo "$function failed test set $index\n";
                        echo "\tExpected result: {$set['result']}\n";
                        echo "\tActual result:   ";
                        var_dump( $result );
                        
                        $errors++;
                }
        }
        
        if ( 0 == $errors )
                echo "$function passed all tests.\n";
        
        echo "\n";
}



$results = array();

for ( $count = 0; $count < $trials; $count++ ) {
        $function = $functions[ rand( 0, count( $functions ) - 1 ) ];
        
        if ( ! isset( $results[$function] ) ) {
                $results[$function] = array(
                        'trials'                => 0,
                        'total_time'    => 0,
                        'trial_time'    => array(),
                        'total_count'   => 0,
                );
        }
        
        run_trial( $function );
}

foreach ( $functions as $function ) {
        $result = $results[$function];
        
        echo "$function\n";
        echo "==========================\n";
        echo "Trials:           {$result['trials']}\n";
        echo "Total Time:       {$result['total_time']}\n";
        echo "Average Time:     " . ( $result['total_time'] / $result['trials'] ) . "\n";
        echo "Runs per Sec:     " . ( 1 / ( $result['total_time'] / $result['trials'] ) ) . "\n";
        
        if ( isset( $results['no_cast']['total_time'] ) )
                echo "Speed Difference: " . ( ( $result['total_time'] - $results['no_cast']['total_time'] ) / $results['no_cast']['total_time'] ) . "\n";
        
        echo "\n";
}



function run_trial( $function, $count = 10 ) {
        global $results, $data;
        
        
        $time = 0;
        $total_count = 0;
        
        for ( $i = 0; $i < $count; $i++ ) {
                $args = $data[ rand( 0, count( $data ) - 1 ) ]['inputs'];
                
                $start = microtime( true );
                @call_user_func_array( $function, $args );
                $end = microtime( true );
                
                $time += $end - $start;
                
                $total_count++;
        }
        
        
        $results[$function]['trials']++;
        $results[$function]['total_time'] += $time;
        $results[$function]['total_count'] += $total_count;
}


function get_page_by_path( $pages, $parts ) {
        $revparts = array_reverse( $parts );

        $foundid = 0;
        foreach ( $pages as $page ) {
                if ( $page->post_name == $revparts[0] ) {
                        $count = 0;
                        if ( $page->post_parent != 0 ) {
                                if ( null === ( $parent_page = $pages[ $page->post_parent ] ) )
                                        continue;

                                while ( $parent_page->ID != 0 ) {
                                        $count++;
                                        if ( $parent_page->post_name != $revparts[ $count ] )
                                                break;
                                        $parent_page = $pages[ $parent_page->post_parent ];
                                }

                                if ( $parent_page->ID == 0 && $count+1 == count($revparts) ) {
                                        $foundid = $page->ID;
                                        break;
                                }
                        } else if ( count($revparts) == 1 ) {
                                $foundid = $page->ID;
                                break;
                        }
                }
        }

        if ( $foundid )
                return $foundid;

        return null;
}

function get_page_by_path_simple_fix( $pages, $parts ) {
        $revparts = array_reverse( $parts );

        $foundid = 0;
        foreach ( $pages as $page ) {
                if ( $page->post_name == $revparts[0] ) {
                        $count = 0;
                        if ( $page->post_parent != 0 ) {
                                if ( ! isset( $pages[ $page->post_parent ] ) )
                                        continue;

                                $parent_page = $pages[ $page->post_parent ];

                                while ( ! is_null( $parent_page ) ) {
                                        $count++;
                                        if ( $parent_page->post_name != $revparts[ $count ] )
                                                break;
                                        if ( isset( $pages[ $parent_page->post_parent ] ) )
                                                $parent_page = $pages[ $parent_page->post_parent ];
                                        else
                                                $parent_page = null;
                                }

                                if ( is_null( $parent_page ) && $count+1 == count($revparts) ) {
                                        $foundid = $page->ID;
                                        break;
                                }
                        } else if ( count($revparts) == 1 ) {
                                $foundid = $page->ID;
                                break;
                        }
                }
        }

        if ( $foundid )
                return $foundid;

        return null;
}

function get_page_by_path_rewritten( $pages, $parts ) {
        $revparts = array_reverse( $parts );

        $foundid = 0;
        foreach ( $pages as $page ) {
                if ( $page->post_name == $revparts[0] ) {
                        if ( 1 == count( $revparts ) ) {
                                $foundid = $page->ID;
                                break;
                        }
                        
                        $cur_page = $page;
                        $count = 0;
                        while ( ! empty( $cur_page->post_parent ) && isset( $pages[ $cur_page->post_parent ] ) ) {
                                if ( $cur_page->post_name != $revparts[ $count ] )
                                        break;

                                $cur_page = $pages[ $cur_page->post_parent ];
                                $count++;
                        }

                        if ( empty( $cur_page->post_parent ) && $count+1 == count($revparts) ) {
                                $foundid = $page->ID;
                                break;
                        }
                }
        }

        if ( $foundid )
                return $foundid;

        return null;
}