3v4l.org

run code in 300+ PHP versions simultaneously
<?php define('NUM_ITERATIONS', 1000000000); $var = NULL; // Profile is_null. $time = time(); for ($i = 0; $i < NUM_ITERATIONS; $i++) { is_null($var); } print (time() - $time) . ' elapsed seconds.' . PHP_EOL; // Profile (bool) $time = time(); for ($i = 0; $i < NUM_ITERATIONS; $i++) { (bool) $var; } print (time() - $time) . ' elapsed seconds.' . PHP_EOL; // Profile isset $time = time(); for ($i = 0; $i < NUM_ITERATIONS; $i++) { isset($var); } print (time() - $time) . ' elapsed seconds.' . PHP_EOL;

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).

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0032.49819.38
7.1.100.0002.50118.15
7.1.70.0072.49517.07
7.1.60.2132.28719.20
7.1.50.0072.49517.08
7.1.00.0072.49322.23
7.0.200.0072.49416.50
7.0.100.0032.49719.93
7.0.90.0172.48319.93
7.0.80.0102.49020.13
7.0.70.0002.50019.96
7.0.60.0072.49319.92
7.0.50.0102.49020.39
7.0.40.0032.49720.18
7.0.30.0232.47720.04
7.0.20.0072.49320.07
7.0.10.0032.49719.95
7.0.00.0032.49720.02
5.6.280.0032.49721.09
5.6.250.3632.13320.59
5.6.240.0072.49320.60
5.6.230.0002.50020.50
5.6.220.0072.49320.61
5.6.210.0072.49320.45
5.6.200.0072.49321.04
5.6.190.0102.49020.94
5.6.180.0032.49721.08
5.6.170.0132.48721.13
5.6.160.0072.49320.95
5.6.150.0172.48321.05
5.6.140.0202.48020.94
5.6.130.0032.49720.93
5.6.120.0032.49721.04
5.6.110.0032.49721.10
5.6.100.0032.49721.06
5.6.90.0032.49721.02
5.6.80.0072.49320.42
5.6.70.0002.50020.50
5.6.60.0072.35320.41
5.6.50.0032.49720.41
5.6.40.0072.49320.29
5.6.30.0032.49720.38
5.6.20.0072.49320.39
5.6.10.0072.49320.39
5.6.00.0172.48320.27
5.5.380.0102.49020.35
5.5.370.0102.49020.38
5.5.360.0002.50020.39
5.5.350.0072.49320.38
5.5.340.0032.49720.88
5.5.330.0072.49320.87
5.5.320.0032.49720.89
5.5.310.0032.49720.89
5.5.300.0072.49320.92
5.5.290.0132.48720.80
5.5.280.0172.48320.90
5.5.270.0102.49020.89
5.5.260.0102.49020.79
5.5.250.0102.49020.68
5.5.240.0072.49320.30
5.5.230.0102.49020.17
5.5.220.0072.49320.29
5.5.210.0072.49320.02
5.5.200.0002.50020.20
5.5.190.0072.49320.07
5.5.180.0072.49320.26
5.5.160.0002.50020.16
5.5.150.0032.49720.27
5.5.140.0002.50020.12
5.5.130.0072.49320.27
5.5.120.0002.48320.14
5.5.110.0102.45720.23
5.5.100.0072.47719.94
5.5.90.0032.49020.09
5.5.80.0102.45720.15
5.5.70.0002.49320.14
5.5.60.0072.46020.06
5.5.50.0072.46719.95
5.5.40.0072.45720.10
5.5.30.0132.45320.04
5.5.20.0032.38020.08
5.5.10.0102.45719.96
5.5.00.0132.45720.11

preferences:
35.75 ms | 400 KiB | 5 Q