3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr('abcdefgh', -4,-2)

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)
5.4.370.0070.04718.66
5.4.360.0100.03718.47
5.4.350.0100.03718.59
5.4.340.0100.04018.51
5.4.320.0170.03718.60
5.4.310.0070.04018.39
5.4.300.0100.03718.40
5.4.290.0070.04018.51
5.4.280.0100.04318.39
5.4.270.0130.04018.38
5.4.260.0070.04018.58
5.4.250.0030.04318.39
5.4.240.0170.04718.63
5.4.230.0000.04318.58
5.4.220.0100.03318.58
5.4.210.0030.04018.58
5.4.200.0030.04016.46
5.4.190.0030.04718.37
5.4.180.0130.04318.57
5.4.170.0230.04318.48
5.4.160.0200.04718.57
5.4.150.0100.05018.48
5.4.140.0370.03716.04
5.4.130.0200.03716.02
5.4.120.0100.05016.22
5.4.110.0070.03716.07
5.4.100.0070.05316.07
5.4.90.0100.03716.17
5.4.80.0130.03716.26
5.4.70.0300.03316.05
5.4.60.0300.04016.02
5.4.50.0130.04016.09
5.4.40.0170.04016.05
5.4.30.0100.03315.97
5.4.20.0000.04316.09
5.4.10.0100.04016.22
5.4.00.0100.03315.62
5.3.290.0100.04014.64
5.3.280.0100.03714.48
5.3.270.0030.04314.50
5.3.260.0230.03314.63
5.3.250.0030.04014.51
5.3.240.0070.04714.46
5.3.230.0070.04314.61
5.3.220.0030.04314.46
5.3.210.0130.04014.50
5.3.200.0100.03714.57
5.3.190.0200.03714.46
5.3.180.0130.04014.48
5.3.170.0070.04714.48
5.3.160.0100.05014.59
5.3.150.0100.03714.50
5.3.140.0070.04014.45
5.3.130.0100.04014.41
5.3.120.0030.04714.46
5.3.110.0000.04314.56
5.3.100.0000.04713.89
5.3.90.0030.04313.95
5.3.80.0070.04013.96
5.3.70.0030.04013.93
5.3.60.0000.04713.99
5.3.50.0070.04013.86
5.3.40.0070.04013.87
5.3.30.0030.04013.80
5.3.20.0100.04313.62
5.3.10.0130.04013.54
5.3.00.0070.03713.61
5.2.170.0000.03711.11
5.2.160.0130.02311.14
5.2.150.0100.03711.11
5.2.140.0070.03311.13
5.2.130.0330.02711.07
5.2.120.0230.03011.02
5.2.110.0070.03011.11
5.2.100.0070.02710.98
5.2.90.0000.03711.11
5.2.80.0070.03011.05
5.2.70.0100.03311.02
5.2.60.0070.03310.91
5.2.50.0100.02710.99
5.2.40.0000.03310.95
5.2.30.0000.03710.93
5.2.20.0030.03310.95
5.2.10.0030.03310.89
5.2.00.0000.03710.83
5.1.60.0030.03010.03
5.1.50.0100.0239.96
5.1.40.0000.0309.93
5.1.30.0200.02010.30
5.1.20.0000.04710.27
5.1.10.0000.03310.14
5.1.00.0030.03010.04
5.0.50.0070.0178.46
5.0.40.0030.0238.47
5.0.30.0000.0408.19
5.0.20.0070.0178.20
5.0.10.0030.0278.23
5.0.00.0070.0278.11
4.4.90.0070.0135.77
4.4.80.0000.0205.84
4.4.70.0100.0135.84
4.4.60.0000.0205.85
4.4.50.0000.0175.89
4.4.40.0030.0275.76
4.4.30.0030.0205.84
4.4.20.0000.0235.88
4.4.10.0070.0135.87
4.4.00.0000.0275.84
4.3.110.0000.0205.75
4.3.100.0030.0135.78
4.3.90.0030.0135.72
4.3.80.0030.0235.85
4.3.70.0170.0175.80
4.3.60.0100.0175.70
4.3.50.0070.0205.84
4.3.40.0170.0235.72
4.3.30.0030.0174.52
4.3.20.0030.0204.47
4.3.10.0070.0134.45
4.3.00.0000.0236.72

preferences:
152.09 ms | 1394 KiB | 7 Q