3v4l.org

run code in 300+ PHP versions simultaneously
<?php function get_back_off_sleep_time(&$int_back_off_multiplier) { if ($int_back_off_multiplier++) { return self::BACK_OFF_SCALE_FACTOR * pow(2, $int_back_off_multiplier - 1); } return 0; } $foo = 0; for ($i = 0; $i < 10; $i++) { echo get_back_off_sleep_time($foo), "\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).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.260.0100.05018.98
5.4.250.0130.06719.03
5.4.240.0100.05718.75
5.4.230.0100.05318.66
5.4.220.0170.05318.80
5.4.210.0100.07018.81
5.4.200.0100.05018.66
5.4.190.0030.06018.84
5.4.180.0130.05018.84
5.4.170.0170.06718.78
5.4.160.0070.07318.95
5.4.150.0170.05318.88
5.4.140.0100.07316.60
5.4.130.0270.05016.35
5.4.120.0100.06716.39
5.4.110.0100.06016.39
5.4.100.0130.05716.46
5.4.90.0070.07316.30
5.4.80.0130.06716.46
5.4.70.0130.05316.45
5.4.60.0300.05016.58
5.4.50.0130.04316.32
5.4.40.0130.04316.50
5.4.30.0130.06716.21
5.4.20.0070.05316.44
5.4.10.0070.05316.52
5.4.00.0070.05716.01
5.3.280.0170.05014.65
5.3.270.0100.05314.82
5.3.260.0170.05014.66
5.3.250.0200.07314.67
5.3.240.0100.06314.50
5.3.230.0100.05014.68
5.3.220.0130.04714.39
5.3.210.0200.06014.63
5.3.200.0130.07014.64
5.3.190.0070.05314.39
5.3.180.0070.05014.64
5.3.170.0100.05314.64
5.3.160.0170.06014.64
5.3.150.0030.05714.70
5.3.140.0000.05714.45
5.3.130.0070.06014.63
5.3.120.0100.06314.72
5.3.110.0070.05314.63
5.3.100.0100.04714.20
5.3.90.0070.05314.20
5.3.80.0100.05013.92
5.3.70.0130.05014.11
5.3.60.0170.04714.16
5.3.50.0070.05014.12
5.3.40.0130.05014.13
5.3.30.0130.06713.90
5.3.20.0130.05713.69
5.3.10.0100.04313.73
5.3.00.0100.04313.63
5.2.170.0230.04011.22
5.2.160.0100.05711.11
5.2.150.0030.06311.11
5.2.140.0130.04311.22
5.2.130.0100.05311.08
5.2.120.0130.03311.16
5.2.110.0000.04311.18
5.2.100.0070.03711.00
5.2.90.0000.04711.20
5.2.80.0100.05311.04
5.2.70.0030.05711.15
5.2.60.0130.03311.14
5.2.50.0070.04011.11
5.2.40.0070.03711.07
5.2.30.0130.05310.96
5.2.20.0100.04310.94
5.2.10.0100.03310.84
5.2.00.0070.04010.88
5.1.60.0030.0339.95
5.1.50.0000.04010.19
5.1.40.0030.05010.02
5.1.30.0000.04010.40
5.1.20.0030.04010.53
5.1.10.0170.02310.04
5.1.00.0100.03310.02
5.0.50.0070.0238.70
5.0.40.0030.0278.39
5.0.30.0070.0408.05
5.0.20.0030.0378.30
5.0.10.0100.0238.26
5.0.00.0070.0508.22
4.4.90.0030.0207.36
4.4.80.0000.0237.36
4.4.70.0030.0207.36
4.4.60.0030.0307.36
4.4.50.0030.0237.36
4.4.40.0030.0337.36
4.4.30.0000.0237.36
4.4.20.0030.0207.36
4.4.10.0030.0207.36
4.4.00.0100.0307.36
4.3.110.0030.0307.36
4.3.100.0100.0177.36
4.3.90.0030.0277.36
4.3.80.0000.0407.36
4.3.70.0000.0207.36
4.3.60.0070.0177.36
4.3.50.0030.0307.36
4.3.40.0070.0337.36
4.3.30.0000.0237.36
4.3.20.0000.0237.36
4.3.10.0000.0237.36
4.3.00.0130.0237.13

preferences:
150.04 ms | 1394 KiB | 7 Q