| 1 | <?php
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| 2 |
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| 3 | error_reporting( E_ALL );
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| 4 |
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| 5 | $trials = 1000000;
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| 6 |
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| 7 | define( 'WP_MEMORY_LIMIT', '32M' );
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| 8 |
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| 9 | $functions = array( 'wp_function', 'patch_function_original', 'patch_function_new', 'patch_function_new_complete', 'wp_convert_hr_to_bytes', 'map', 'aaron' );
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| 10 | $comparisons = array(
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| 11 | '-1' => '-1',
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| 12 | '100' => '32M',
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| 13 | '1m' => '32M',
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| 14 | '7.5G' => '7.5G',
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| 15 | '234k' => '32M',
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| 16 | '94556M' => '94556M',
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| 17 | '128 M' => '128 M',
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| 18 | '52428800' => '52428800',
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| 19 | );
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| 20 |
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| 21 | $normalize_mem = create_function( '$val', '$val = trim($val); $last = strtolower($val[strlen($val)-1]); switch($last) { case \'g\': $val *= 1024; case \'m\': $val *= 1024; case \'k\': $val *= 1024; return max(0, (int) $val); }' );
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| 22 |
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| 23 | for ( $count = 0; $count < count( $functions ); $count++ ) {
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| 24 | $function = $functions[$count];
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| 25 |
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| 26 | foreach ( $comparisons as $size => $answer ) {
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| 27 | ini_set( 'memory_limit', $size );
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| 28 |
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| 29 | $function();
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| 30 |
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| 31 | $result = ini_get( 'memory_limit' );
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| 32 |
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| 33 | echo "$function $size => $answer ($result) ";
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| 34 |
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| 35 | if ( $answer == $result )
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| 36 | echo "Success\n";
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| 37 | else
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| 38 | echo "Fail\n";
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| 39 | }
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| 40 | echo "\n";
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| 41 | }
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| 42 |
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| 43 | $results = array();
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| 44 |
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| 45 | for ( $count = 0; $count < $trials; $count++ ) {
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| 46 | $function = $functions[ rand( 0, count( $functions ) - 1 ) ];
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| 47 |
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| 48 | if ( ! isset( $results[$function] ) ) {
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| 49 | $results[$function] = array(
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| 50 | 'trials' => 0,
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| 51 | 'total_time' => 0,
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| 52 | 'trial_time' => array(),
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| 53 | 'success_count' => 0,
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| 54 | 'total_count' => 0,
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| 55 | );
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| 56 | }
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| 57 |
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| 58 | run_trial( $function );
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| 59 | }
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| 60 |
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| 61 | foreach ( $functions as $function ) {
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| 62 | $result = $results[$function];
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| 63 |
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| 64 | echo "$function\n";
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| 65 | echo "==========================\n";
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| 66 | echo "Trials: {$result['trials']}\n";
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| 67 | echo "Total Time: {$result['total_time']}\n";
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| 68 | echo "Average Time: " . ( $result['total_time'] / $result['trials'] ) . "\n";
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| 69 | echo "Runs per Sec: " . ( 1 / ( $result['total_time'] / $result['trials'] ) ) . "\n";
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| 70 |
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| 71 | if ( $result['total_count'] > 0 )
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| 72 | echo "Success Rate: " . ( $result['success_count'] / $result['total_count'] ) . "\n";
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| 73 |
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| 74 | if ( isset( $results['wp_function']['total_time'] ) )
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| 75 | echo "Speed Difference: " . ( ( $result['total_time'] - $results['wp_function']['total_time'] ) / $results['wp_function']['total_time'] ) . "\n";
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| 76 |
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| 77 | echo "\n";
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| 78 | }
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| 79 |
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| 80 |
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| 81 |
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| 82 | function run_trial( $function, $count = 10 ) {
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| 83 | global $results, $comparisons;
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| 84 |
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| 85 |
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| 86 | $time = 0;
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| 87 |
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| 88 | $success_count = $total_count = 0;
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| 89 |
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| 90 | for ( $i = 0; $i < $count; $i++ ) {
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| 91 | foreach ( $comparisons as $size => $answer ) {
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| 92 | ini_set( 'memory_limit', $size );
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| 93 |
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| 94 | $start = microtime( true );
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| 95 | $function();
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| 96 | $end = microtime( true );
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| 97 |
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| 98 | $time += $end - $start;
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| 99 |
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| 100 |
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| 101 | if ( $answer == ini_get( 'memory_limit' ) )
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| 102 | $success_count++;
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| 103 | $total_count++;
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| 104 | }
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| 105 | }
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| 106 |
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| 107 |
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| 108 | $results[$function]['trials']++;
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| 109 | $results[$function]['total_time'] += $time;
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| 110 | $results[$function]['success_count'] += $success_count;
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| 111 | $results[$function]['total_count'] += $total_count;
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| 112 | }
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| 113 |
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| 114 |
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| 115 | function wp_function() {
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| 116 | if ( function_exists('memory_get_usage') && ( (int) @ini_get('memory_limit') < abs(intval(WP_MEMORY_LIMIT)) ) )
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| 117 | @ini_set('memory_limit', WP_MEMORY_LIMIT);
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| 118 | }
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| 119 |
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| 120 | function patch_function_original() {
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| 121 | global $normalize_mem;
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| 122 |
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| 123 | if (
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| 124 | function_exists( 'memory_get_usage' )
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| 125 | && ( function_exists( $normalize_mem ) )
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| 126 | && ( $normalize_mem( @ini_get( 'memory_limit' ) ) < $normalize_mem( WP_MEMORY_LIMIT ) )
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| 127 | ) {
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| 128 | @ini_set('memory_limit', WP_MEMORY_LIMIT);
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| 129 | }
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| 130 | unset( $normalize_mem );
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| 131 | }
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| 132 |
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| 133 | function patch_function_new() {
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| 134 | if ( function_exists( 'memory_get_usage' ) ) {
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| 135 | $memory_limit = @ini_get( 'memory_limit' );
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| 136 |
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| 137 | if ( $memory_limit > -1 ) {
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| 138 | switch( substr( $memory_limit, -1 ) ) {
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| 139 | case 'M': case 'm':
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| 140 | $memory_limit = (int) $memory_limit;
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| 141 | break;
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| 142 | case 'G': case 'g':
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| 143 | $memory_limit = (int) $memory_limit * 1024;
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| 144 | break;
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| 145 | case 'K': case 'k':
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| 146 | $memory_limit = (int) $memory_limit / 1024;
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| 147 | break;
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| 148 | default:
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| 149 | $memory_limit = (int) $memory_limit / 1048576;
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| 150 | }
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| 151 |
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| 152 | if ( $memory_limit < abs( intval( WP_MEMORY_LIMIT ) ) )
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| 153 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT );
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| 154 | }
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| 155 | }
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| 156 | }
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| 157 |
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| 158 | function patch_function_new_complete() {
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| 159 | $memory_limit = @ini_get( 'memory_limit' );
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| 160 |
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| 161 | if ( $memory_limit > -1 ) {
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| 162 | $unit = strtolower( substr( $memory_limit, -1 ) );
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| 163 |
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| 164 | $wp_memory_limit = WP_MEMORY_LIMIT;
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| 165 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) );
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| 166 |
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| 167 | if ( 'm' == $unit )
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| 168 | $memory_limit *= 1048576;
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| 169 | else if ( 'g' == $unit )
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| 170 | $memory_limit *= 1073741824;
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| 171 | else if ( 'k' == $unit )
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| 172 | $memory_limit *= 1024;
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| 173 |
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| 174 | if ( 'm' == $wp_unit )
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| 175 | $wp_memory_limit *= 1048576;
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| 176 | else if ( 'g' == $wp_unit )
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| 177 | $wp_memory_limit *= 1073741824;
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| 178 | else if ( 'k' == $wp_unit )
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| 179 | $wp_memory_limit *= 1024;
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| 180 |
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| 181 | if ( (int) $memory_limit < (int) $wp_memory_limit )
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| 182 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT );
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| 183 | }
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| 184 | }
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| 185 |
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| 186 | function wp_convert_hr_to_bytes() {
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| 187 | $size = strtolower(@ini_get('memory_limit'));
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| 188 | $bytes = (int) $size;
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| 189 | if ( strpos($size, 'k') !== false )
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| 190 | $bytes = intval($size) * 1024;
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| 191 | elseif ( strpos($size, 'm') !== false )
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| 192 | $bytes = intval($size) * 1024 * 1024;
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| 193 | elseif ( strpos($size, 'g') !== false )
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| 194 | $bytes = intval($size) * 1024 * 1024 * 1024;
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| 195 |
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| 196 | $wp_size = strtolower(@ini_get('memory_limit'));
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| 197 | $wp_bytes = (int) $wp_size;
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| 198 | if ( strpos($wp_size, 'k') !== false )
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| 199 | $wp_bytes = intval($wp_size) * 1024;
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| 200 | elseif ( strpos($wp_size, 'm') !== false )
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| 201 | $wp_bytes = intval($wp_size) * 1024 * 1024;
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| 202 | elseif ( strpos($wp_size, 'g') !== false )
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| 203 | $wp_bytes = intval($wp_size) * 1024 * 1024 * 1024;
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| 204 |
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| 205 | if ( $bytes < $wp_bytes )
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| 206 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT );
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| 207 | }
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| 208 |
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| 209 | function map() {
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| 210 | $memory_limit = @ini_get( 'memory_limit' );
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| 211 |
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| 212 | if ( $memory_limit > -1 ) {
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| 213 | $map = array('g' => 1073741824, 'm' => 1048576, 'k'=> 1024);
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| 214 |
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| 215 | $unit = strtolower( substr( $memory_limit, -1 ) );
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| 216 |
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| 217 | $wp_memory_limit = WP_MEMORY_LIMIT;
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| 218 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) );
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| 219 |
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| 220 | $memory_limit *= isset($map[$unit]) ? $map[$unit] : 1;
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| 221 | $wp_memory_limit *= isset($map[$wp_unit]) ? $map[$wp_unit] : 1;
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| 222 |
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| 223 | if ( (int) $memory_limit < (int) $wp_memory_limit )
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| 224 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT );
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| 225 | }
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| 226 | }
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| 227 |
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| 228 | function aaron() {
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| 229 | $memory_limit = @ini_get( 'memory_limit' );
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| 230 |
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| 231 | if ( $memory_limit > -1 ) {
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| 232 | $symbol = array('B', 'K', 'M', 'G');
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| 233 |
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| 234 | $unit = strtolower( substr( $memory_limit, -1 ) );
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| 235 |
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| 236 | $wp_memory_limit = WP_MEMORY_LIMIT;
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| 237 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) );
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| 238 |
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| 239 | $memory_limit *= pow(1024, array_search(strtoupper($unit), $symbol));
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| 240 | $wp_memory_limit *= pow(1024, array_search(strtoupper($wp_unit), $symbol));
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| 241 |
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| 242 | if ( (int) $memory_limit < (int) $wp_memory_limit )
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| 243 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT );
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| 244 | }
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| 245 | }
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