| 1 | <?php |
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| 2 | |
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| 3 | error_reporting( -1 ); |
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| 4 | ini_set('display_errors', 1); |
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| 5 | |
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| 6 | $trials = 1000000; |
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| 7 | |
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| 8 | define( 'WP_MEMORY_LIMIT', '32M' ); |
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| 9 | |
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| 10 | $functions = array( 'wp_function', 'patch_function_original', 'patch_function_new', 'patch_function_new_complete', 'wp_convert_hr_to_bytes', 'map', 'aaron', 'str' ); |
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| 11 | $comparisons = array( |
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| 12 | '' => '32M', |
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| 13 | '2147483648'=> '2147483648', |
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| 14 | '4294967296'=> '4294967296', |
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| 15 | '-1' => '-1', |
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| 16 | '100' => '32M', |
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| 17 | '1m' => '32M', |
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| 18 | '7.5G' => '7.5G', |
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| 19 | '234k' => '32M', |
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| 20 | '94556M' => '94556M', |
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| 21 | '128 M' => '128 M', |
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| 22 | '52428800' => '52428800', |
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| 23 | ); |
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| 24 | |
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| 25 | $normalize_mem = create_function( '$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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| 26 | |
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| 27 | /** |
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| 28 | * static error catching class |
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| 29 | * |
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| 30 | * start() starts tracking, stop() stops it and returns errors |
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| 31 | * that occured. |
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| 32 | */ |
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| 33 | class catcherrors { |
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| 34 | static $messages = array(); |
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| 35 | static $active=false; |
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| 36 | static $oldDisplay; |
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| 37 | static function callback() { |
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| 38 | self::$messages[] = func_get_args(); |
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| 39 | return true; |
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| 40 | } |
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| 41 | static function start() { |
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| 42 | if (self::$active) throw new Exception('already active. stop() first.'); |
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| 43 | set_error_handler('catcherrors::callback'); |
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| 44 | self::$active = true; |
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| 45 | } |
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| 46 | static function stop() { |
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| 47 | restore_error_handler(); |
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| 48 | self::$active = false; |
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| 49 | $messages = self::$messages; |
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| 50 | self::$messages = array(); |
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| 51 | return $messages; |
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| 52 | } |
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| 53 | } |
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| 54 | |
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| 55 | for ( $count = 0; $count < count( $functions ); $count++ ) { |
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| 56 | $function = $functions[$count]; |
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| 57 | |
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| 58 | foreach ( $comparisons as $size => $answer ) { |
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| 59 | ini_set( 'memory_limit', $size ); |
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| 60 | |
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| 61 | catcherrors::start(); |
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| 62 | $function(); |
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| 63 | $errors = catcherrors::stop(); |
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| 64 | $result = ini_get( 'memory_limit' ); |
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| 65 | |
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| 66 | echo "$function $size => $answer ($result) "; |
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| 67 | |
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| 68 | if (count($errors)) { |
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| 69 | echo "(", count($errors), " errors!) "; |
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| 70 | } else { |
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| 71 | echo " (no errors) "; |
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| 72 | } |
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| 73 | if ( $answer == $result ) |
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| 74 | echo "Success\n"; |
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| 75 | else |
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| 76 | echo "Fail\n"; |
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| 77 | |
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| 78 | foreach($errors as $index => $error) { |
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| 79 | printf(" #%d: %s %s %s\n", $index, $error[0], $error[1], $error[2]); |
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| 80 | } |
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| 81 | |
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| 82 | } |
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| 83 | echo "\n"; |
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| 84 | } |
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| 85 | |
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| 86 | $results = array(); |
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| 87 | |
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| 88 | echo 'Running ', $trials, ' iterations now...'; |
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| 89 | |
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| 90 | for ( $count = 0; $count < $trials; $count++ ) { |
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| 91 | $function = $functions[ rand( 0, count( $functions ) - 1 ) ]; |
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| 92 | |
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| 93 | if ( ! isset( $results[$function] ) ) { |
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| 94 | $results[$function] = array( |
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| 95 | 'trials' => 0, |
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| 96 | 'total_time' => 0, |
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| 97 | 'trial_time' => array(), |
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| 98 | 'success_count' => 0, |
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| 99 | 'total_count' => 0, |
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| 100 | ); |
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| 101 | } |
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| 102 | |
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| 103 | run_trial( $function ); |
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| 104 | } |
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| 105 | |
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| 106 | echo ' - done.', "\n\nResults:\n\n"; |
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| 107 | |
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| 108 | foreach ( $functions as $function ) { |
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| 109 | $result = $results[$function]; |
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| 110 | |
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| 111 | echo "$function\n"; |
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| 112 | echo "==========================\n"; |
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| 113 | echo "Trials: {$result['trials']}\n"; |
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| 114 | echo "Total Time: {$result['total_time']}\n"; |
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| 115 | echo "Average Time: " . ( $result['total_time'] / $result['trials'] ) . "\n"; |
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| 116 | echo "Runs per Sec: " . ( 1 / ( $result['total_time'] / $result['trials'] ) ) . "\n"; |
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| 117 | |
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| 118 | if ( $result['total_count'] > 0 ) |
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| 119 | echo "Success Rate: " . ( $result['success_count'] / $result['total_count'] ) . "\n"; |
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| 120 | |
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| 121 | if ( isset( $results['wp_function']['total_time'] ) ) |
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| 122 | echo "Speed Difference: " . ( ( $result['total_time'] - $results['wp_function']['total_time'] ) / $results['wp_function']['total_time'] ) . "\n"; |
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| 123 | |
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| 124 | echo "\n"; |
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| 125 | } |
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| 126 | |
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| 127 | function run_trial( $function, $count = 10 ) { |
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| 128 | global $results, $comparisons; |
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| 129 | |
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| 130 | |
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| 131 | $time = 0; |
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| 132 | |
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| 133 | $success_count = $total_count = 0; |
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| 134 | |
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| 135 | for ( $i = 0; $i < $count; $i++ ) { |
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| 136 | foreach ( $comparisons as $size => $answer ) { |
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| 137 | ini_set( 'memory_limit', $size ); |
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| 138 | |
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| 139 | catcherrors::start(); |
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| 140 | $start = microtime( true ); |
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| 141 | $function(); |
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| 142 | $end = microtime( true ); |
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| 143 | $errors = catcherrors::stop(); |
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| 144 | $error_count = count($errors); |
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| 145 | |
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| 146 | $time += $end - $start; |
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| 147 | |
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| 148 | |
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| 149 | if ( 0 === $error_count && $answer == ini_get( 'memory_limit' ) ) |
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| 150 | $success_count++; |
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| 151 | $total_count++; |
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| 152 | } |
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| 153 | } |
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| 154 | |
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| 155 | |
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| 156 | $results[$function]['trials']++; |
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| 157 | $results[$function]['total_time'] += $time; |
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| 158 | $results[$function]['success_count'] += $success_count; |
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| 159 | $results[$function]['total_count'] += $total_count; |
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| 160 | } |
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| 161 | |
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| 162 | |
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| 163 | function wp_function() { |
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| 164 | if ( function_exists('memory_get_usage') && ( (int) @ini_get('memory_limit') < abs(intval(WP_MEMORY_LIMIT)) ) ) |
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| 165 | @ini_set('memory_limit', WP_MEMORY_LIMIT); |
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| 166 | } |
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| 167 | |
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| 168 | function patch_function_original() { |
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| 169 | global $normalize_mem; |
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| 170 | |
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| 171 | if ( |
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| 172 | function_exists( 'memory_get_usage' ) |
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| 173 | && ( function_exists( $normalize_mem ) ) |
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| 174 | && ( $normalize_mem( @ini_get( 'memory_limit' ) ) < $normalize_mem( WP_MEMORY_LIMIT ) ) |
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| 175 | ) { |
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| 176 | @ini_set('memory_limit', WP_MEMORY_LIMIT); |
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| 177 | } |
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| 178 | unset( $normalize_mem ); |
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| 179 | } |
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| 180 | |
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| 181 | function patch_function_new() { |
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| 182 | if ( function_exists( 'memory_get_usage' ) ) { |
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| 183 | $memory_limit = @ini_get( 'memory_limit' ); |
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| 184 | |
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| 185 | if ( $memory_limit > -1 ) { |
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| 186 | switch( substr( $memory_limit, -1 ) ) { |
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| 187 | case 'M': case 'm': |
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| 188 | $memory_limit = (int) $memory_limit; |
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| 189 | break; |
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| 190 | case 'G': case 'g': |
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| 191 | $memory_limit = (int) $memory_limit * 1024; |
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| 192 | break; |
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| 193 | case 'K': case 'k': |
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| 194 | $memory_limit = (int) $memory_limit / 1024; |
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| 195 | break; |
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| 196 | default: |
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| 197 | $memory_limit = (int) $memory_limit / 1048576; |
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| 198 | } |
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| 199 | |
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| 200 | if ( $memory_limit < abs( intval( WP_MEMORY_LIMIT ) ) ) |
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| 201 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT ); |
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| 202 | } |
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| 203 | } |
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| 204 | } |
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| 205 | |
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| 206 | function patch_function_new_complete() { |
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| 207 | $memory_limit = @ini_get( 'memory_limit' ); |
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| 208 | |
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| 209 | if ( $memory_limit > -1 ) { |
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| 210 | $unit = strtolower( substr( $memory_limit, -1 ) ); |
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| 211 | |
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| 212 | $wp_memory_limit = WP_MEMORY_LIMIT; |
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| 213 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) ); |
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| 214 | |
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| 215 | if ( 'm' == $unit ) |
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| 216 | $memory_limit *= 1048576; |
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| 217 | else if ( 'g' == $unit ) |
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| 218 | $memory_limit *= 1073741824; |
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| 219 | else if ( 'k' == $unit ) |
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| 220 | $memory_limit *= 1024; |
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| 221 | |
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| 222 | if ( 'm' == $wp_unit ) |
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| 223 | $wp_memory_limit *= 1048576; |
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| 224 | else if ( 'g' == $wp_unit ) |
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| 225 | $wp_memory_limit *= 1073741824; |
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| 226 | else if ( 'k' == $wp_unit ) |
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| 227 | $wp_memory_limit *= 1024; |
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| 228 | |
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| 229 | if ( (int) $memory_limit < (int) $wp_memory_limit ) |
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| 230 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT ); |
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| 231 | } |
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| 232 | } |
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| 233 | |
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| 234 | function wp_convert_hr_to_bytes() { |
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| 235 | $size = strtolower(@ini_get('memory_limit')); |
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| 236 | $bytes = (int) $size; |
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| 237 | if ( strpos($size, 'k') !== false ) |
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| 238 | $bytes = intval($size) * 1024; |
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| 239 | elseif ( strpos($size, 'm') !== false ) |
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| 240 | $bytes = intval($size) * 1024 * 1024; |
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| 241 | elseif ( strpos($size, 'g') !== false ) |
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| 242 | $bytes = intval($size) * 1024 * 1024 * 1024; |
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| 243 | |
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| 244 | $wp_size = strtolower(@ini_get('memory_limit')); |
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| 245 | $wp_bytes = (int) $wp_size; |
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| 246 | if ( strpos($wp_size, 'k') !== false ) |
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| 247 | $wp_bytes = intval($wp_size) * 1024; |
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| 248 | elseif ( strpos($wp_size, 'm') !== false ) |
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| 249 | $wp_bytes = intval($wp_size) * 1024 * 1024; |
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| 250 | elseif ( strpos($wp_size, 'g') !== false ) |
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| 251 | $wp_bytes = intval($wp_size) * 1024 * 1024 * 1024; |
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| 252 | |
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| 253 | if ( $bytes < $wp_bytes ) |
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| 254 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT ); |
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| 255 | } |
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| 256 | |
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| 257 | function map() { |
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| 258 | static $map = array('g' => 1073741824, 'm' => 1048576, 'k'=> 1024); |
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| 259 | $memory_limit = @ini_get( 'memory_limit' ); |
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| 260 | |
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| 261 | if ( $memory_limit > -1 ) { |
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| 262 | $wp_memory_limit = WP_MEMORY_LIMIT; |
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| 263 | $unit = strtolower( substr( $memory_limit, -1 ) ); |
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| 264 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) ); |
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| 265 | |
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| 266 | isset($map[$unit]) && (float) $memory_limit *= $map[$unit]; |
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| 267 | isset($map[$wp_unit]) && (float) $wp_memory_limit *= $map[$wp_unit]; |
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| 268 | |
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| 269 | if ( $memory_limit < $wp_memory_limit ) |
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| 270 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT ); |
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| 271 | } |
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| 272 | } |
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| 273 | |
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| 274 | function str() { |
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| 275 | static $str = ' kmg'; |
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| 276 | $memory_limit = @ini_get( 'memory_limit' ); |
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| 277 | |
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| 278 | if ( $memory_limit > -1 ) { |
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| 279 | $wp_memory_limit = WP_MEMORY_LIMIT; |
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| 280 | |
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| 281 | $unit = strtolower( substr( $memory_limit, -1 ) ); |
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| 282 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) ); |
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| 283 | |
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| 284 | $unit && (float) $memory_limit *= pow(1024, strpos($str, $unit, 1)); |
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| 285 | $wp_unit && (float) $wp_memory_limit *= pow(1024, strpos($str, $wp_unit, 1)); |
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| 286 | |
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| 287 | if ( $memory_limit < $wp_memory_limit ) |
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| 288 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT ); |
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| 289 | } |
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| 290 | } |
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| 291 | |
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| 292 | function aaron() { |
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| 293 | $memory_limit = @ini_get( 'memory_limit' ); |
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| 294 | |
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| 295 | if ( $memory_limit > -1 ) { |
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| 296 | $symbol = array('B', 'K', 'M', 'G'); |
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| 297 | |
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| 298 | $unit = strtolower( substr( $memory_limit, -1 ) ); |
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| 299 | |
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| 300 | $wp_memory_limit = WP_MEMORY_LIMIT; |
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| 301 | $wp_unit = strtolower( substr( $wp_memory_limit, -1 ) ); |
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| 302 | |
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| 303 | $memory_limit *= pow(1024, array_search(strtoupper($unit), $symbol)); |
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| 304 | $wp_memory_limit *= pow(1024, array_search(strtoupper($wp_unit), $symbol)); |
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| 305 | |
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| 306 | if ( (int) $memory_limit < (int) $wp_memory_limit ) |
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| 307 | @ini_set( 'memory_limit', WP_MEMORY_LIMIT ); |
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| 308 | } |
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| 309 | } |
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