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property_exists.php
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property_exists.php
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<?php
/**
* Benchmark tests for property_exists()
* Usage: php -q property_exists.php
*/
if(!function_exists('memory_get_usage')) {
function memory_get_usage() {
return -1;
}
}
if(PHP_SAPI != 'cli') {
die("Please run this script from command line");
}
$loops = 1000000;
class TestClass {public $prop1 = false; }
if($_SERVER['argc'] == 1) {
$secs = array();
$results = array();
echo 'Running bench:';
for($i = 1; $i <= 3; $i++) {
$cmd = $_SERVER[_] . ' ' . $_SERVER['SCRIPT_FILENAME'] . ' ' . $i;
$ret = unserialize(`$cmd`);
$secs[] = $ret[1];
$results[] = $ret;
echo '.';
}
echo 'done' . PHP_EOL;
} else {
$obj = new TestClass;
$prop = 'prop1';
switch ($_SERVER['argv'][1]) {
case '1':
$m = memory_get_usage();
$s = microtime(1);
for($i = 0; $i < $loops; $i++) {
$v = property_exists($obj, $prop);
}
$return = array(
'property_exists(object, $prop)=' . var_export($v, 1),
(microtime(1)-$s),
(memory_get_usage()-$m)
);
echo serialize($return);
break;
case '2':
$m = memory_get_usage();
$s = microtime(1);
for($i = 0; $i < $loops; $i++) {
$v = property_exists('TestClass', $prop);
}
$return = array(
'property_exists(class, $prop)=' . var_export($v, 1),
(microtime(1)-$s),
(memory_get_usage()-$m)
);
echo serialize($return);
break;
case '3':
$m = memory_get_usage();
$s = microtime(1);
for($i = 0; $i < $loops; $i++) {
$v = isset($obj->{$prop});
}
$return = array(
'isset($obj->{$prop})=' . var_export($v, 1),
(microtime(1)-$s),
(memory_get_usage()-$m)
);
echo serialize($return);
break;
}
exit;
}
$php = PHP_VERSION;
$type = gettype($elem);
echo <<<head
property_exists() tests in PHP v$php
+---------------------------------------------+-------+----------+---------+
| description | sec | memory | % |
+---------------------------------------------+-------+----------+---------+
head;
asort($secs);
$i = 0;
foreach ($secs as $k => $v) {
if($i == 0) {
$best = $results[$k][1];
$results[$k][3] = '100%';
} else {
$results[$k][3] = round(($results[$k][1] * 100) / $best) . '%';
}
echo sprintf(
"| %-43s | %-5s | %-8s | %-7s |\n+%'-45s+%'-7s+%'-10s+%'-9s+\n",
$results[$k][0],
round($results[$k][1],3),
$results[$k][2],
$results[$k][3],
'','','',''
);
$i++;
}
echo "\n\n";