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postpersonality/php: double quotes vs single quotes

Created January 28, 2016 14:25
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php: double quotes vs single quotes
// Benchmark params
$runs = 100000000;
// Gen test array
$strMatch = 'test string';
echo 'Benchmark runs: ' . $runs . PHP_EOL;
// Benchmark isset
$timeStart = microtime(true);
for ($i = 0; $i < $runs; $i++) {
$strMatch === "test string";
}
echo 'double quotes: ' . (microtime(true) - $timeStart) . PHP_EOL;
// Benchmark array_key_exist
$timeStart = microtime(true);
for ($i = 0; $i < $runs; $i++) {
$strMatch === 'test string';
}
echo 'single quotes: ' . (microtime(true) - $timeStart) . PHP_EOL;
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Benchmark runs: 100000000 double quotes: 11.21027803421 single quotes: 11.260735034943
Benchmark runs: 100000000 double quotes: 11.485301971436 single quotes: 11.39031291008
Benchmark runs: 100000000 double quotes: 11.485301971436 single quotes: 11.39031291008

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