Online PHP editor | perf for OvPFF

@ 2014-06-17T12:40:55Z

<?php

$classNames = array(
        "Foo", // userland class
        "StdClass", // class defined by php-src, but still not considered as internal
        "Bar", // userland class implementing Serializable
        "ReflectionClass", // internal class
        "ArrayObject", // internal class implementing Serializable
        "Baz",  // userland class extending internal class implementing Serializable
);

function instanitateWithoutConstructorThroughUnserialize($className) {
        return unserialize(sprintf('O:%d:"%s":0:{}', strlen($className), $className));
}

function instanitateWithoutConstructorThroughReflection($className) {
        try {
                $ref = new ReflectionClass($className);
                return $ref->newInstanceWithoutConstructor();
        } catch (ReflectionException $e) {
                return $e;
        }
}

class Foo {}

class Bar implements Serializable {
        private $data;

        public function serialize() {
                return serialize($this->data);
        }

        public function unserialize($data) {
                $this->data = unserialize($data);
        }
}

class Baz extends ArrayAccess {}

foreach($classNames as $className) {
        echo "$className\n";
        var_dump(instanitateWithoutConstructorThroughUnserialize($className));
        if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
                var_dump(instanitateWithoutConstructorThroughReflection($className));
        }
        echo "\n";
}

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.29	0.010	0.057	12.52
5.4.28	0.018	0.069	12.42
5.4.27	0.012	0.063	12.42
5.4.26	0.012	0.102	12.42
5.4.25	0.017	0.077	12.42
5.4.24	0.011	0.037	12.42
5.4.23	0.013	0.056	12.41
5.4.22	0.008	0.039	12.41
5.4.21	0.012	0.049	12.41
5.4.20	0.010	0.051	12.41
5.4.19	0.024	0.075	12.41
5.4.18	0.010	0.068	12.41
5.4.17	0.024	0.075	12.42
5.4.16	0.014	0.064	12.41
5.4.15	0.008	0.094	12.41
5.4.14	0.011	0.067	12.09
5.4.13	0.029	0.095	12.08
5.4.12	0.008	0.051	12.04
5.4.11	0.008	0.044	12.04
5.4.10	0.008	0.048	12.03
5.4.9	0.019	0.068	12.04
5.4.8	0.016	0.086	12.04
5.4.7	0.030	0.069	12.03
5.4.6	0.017	0.060	12.03
5.4.5	0.014	0.067	12.02
5.4.4	0.020	0.093	12.02
5.4.3	0.011	0.045	12.01
5.4.2	0.009	0.049	12.01
5.4.1	0.018	0.080	12.01
5.4.0	0.010	0.069	11.50
5.3.28	0.034	0.078	12.71
5.3.27	0.017	0.080	12.73
5.3.26	0.020	0.078	12.71
5.3.25	0.020	0.083	12.72
5.3.24	0.028	0.080	12.72
5.3.23	0.028	0.058	12.71
5.3.22	0.019	0.073	12.68
5.3.21	0.023	0.077	12.68
5.3.20	0.033	0.070	12.68
5.3.19	0.030	0.107	12.68
5.3.18	0.020	0.085	12.67
5.3.17	0.048	0.107	12.67
5.3.16	0.015	0.059	12.68
5.3.15	0.031	0.107	12.67
5.3.14	0.021	0.064	12.66
5.3.13	0.019	0.069	12.66
5.3.12	0.016	0.080	12.66
5.3.11	0.030	0.159	12.66
5.3.10	0.019	0.070	12.13
5.3.9	0.020	0.059	12.11
5.3.8	0.021	0.049	12.10
5.3.7	0.018	0.059	12.10
5.3.6	0.020	0.068	12.09
5.3.5	0.011	0.061	12.04
5.3.4	0.013	0.056	12.04
5.3.3	0.021	0.102	11.99
5.3.2	0.008	0.051	11.78
5.3.1	0.009	0.052	11.74
5.3.0	0.016	0.075	11.73

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