3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "12345"; echo $var[0] . "-" . substr($var,0);

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)
8.3.60.0120.00316.50
8.3.50.0150.00517.36
8.3.40.0120.00318.62
8.3.30.0140.00018.64
8.3.20.0060.00318.45
8.3.10.0040.00420.58
8.3.00.0110.00019.27
8.2.180.0120.00616.38
8.2.170.0070.00722.96
8.2.160.0040.01118.58
8.2.150.0060.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0090.00020.45
8.2.110.0050.00521.18
8.2.100.0040.00717.91
8.2.90.0030.00619.26
8.2.80.0000.00919.47
8.2.70.0000.00817.38
8.2.60.0060.00318.04
8.2.50.0060.00318.07
8.2.40.0040.00418.16
8.2.30.0050.00318.10
8.2.20.0080.00019.34
8.2.10.0000.00817.61
8.2.00.0030.00517.55
8.1.280.0100.00725.92
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00322.54
8.1.230.0070.00419.07
8.1.220.0040.00418.77
8.1.210.0040.00419.16
8.1.200.0040.00417.35
8.1.190.0000.00717.52
8.1.180.0040.00418.10
8.1.170.0020.00518.84
8.1.160.0000.00818.80
8.1.150.0040.00418.57
8.1.140.0000.00817.49
8.1.130.0040.00417.77
8.1.120.0030.00317.41
8.1.110.0030.00517.39
8.1.100.0040.00417.51
8.1.90.0040.00417.38
8.1.80.0050.00217.45
8.1.70.0030.00317.44
8.1.60.0080.00017.40
8.1.50.0070.00017.42
8.1.40.0050.00317.42
8.1.30.0000.00817.66
8.1.20.0030.00617.60
8.1.10.0000.00717.53
8.1.00.0030.00617.53
8.0.300.0070.00319.90
8.0.290.0000.00716.61
8.0.280.0030.00318.33
8.0.270.0040.00417.25
8.0.260.0070.00016.77
8.0.250.0030.00616.85
8.0.240.0030.00316.89
8.0.230.0000.00816.91
8.0.220.0000.00716.87
8.0.210.0000.00716.89
8.0.200.0000.00616.87
8.0.190.0000.00716.97
8.0.180.0000.00716.90
8.0.170.0000.00916.72
8.0.160.0000.00816.96
8.0.150.0030.00616.72
8.0.140.0000.00916.73
8.0.130.0060.00013.32
8.0.120.0020.00516.68
8.0.110.0000.00716.88
8.0.100.0000.00816.89
8.0.90.0000.00716.96
8.0.80.0040.01216.81
8.0.70.0040.00416.68
8.0.60.0000.00716.90
8.0.50.0030.00516.91
8.0.30.0040.01317.00
8.0.20.0110.00716.98
8.0.10.0000.00916.94
8.0.00.0030.01516.77
7.4.330.0000.00512.98
7.4.320.0070.00016.44
7.4.300.0000.00616.62
7.4.290.0000.00716.51
7.4.280.0020.00516.51
7.4.270.0070.00016.59
7.4.260.0030.00313.27
7.4.250.0050.00316.57
7.4.240.0000.00716.49
7.4.230.0000.00716.64
7.4.220.0100.01316.29
7.4.210.0040.01116.56
7.4.200.0040.00416.54
7.4.190.0070.00016.50
7.4.160.0060.00916.62
7.4.150.0120.00616.53
7.4.140.0070.01016.44
7.4.130.0090.00616.45
7.4.120.0120.00616.51
7.4.110.0150.00616.32
7.4.100.0120.00916.41
7.4.90.0120.00616.49
7.4.80.0180.00016.57
7.4.70.0080.01416.33
7.4.60.0090.01316.40
7.4.50.0000.00516.55
7.4.40.0000.01516.27
7.4.30.0100.00716.48
7.4.00.0030.01014.86
7.3.330.0060.00013.20
7.3.320.0000.00513.12
7.3.310.0000.00716.11
7.3.300.0030.00316.28
7.3.290.0070.00916.26
7.3.280.0080.00816.14
7.3.270.0030.01416.57
7.3.260.0070.01116.21
7.3.250.0070.01516.52
7.3.240.0100.00616.32
7.3.230.0130.00316.32
7.3.210.0070.01116.30
7.3.200.0090.00919.39
7.3.190.0060.01016.24
7.3.180.0100.00716.23
7.3.170.0140.00716.55
7.3.160.0120.00316.18
7.3.120.0070.00714.65
7.2.330.0090.00916.79
7.2.320.0090.00916.32
7.2.310.0130.00616.68
7.2.300.0190.00316.68
7.2.290.0030.01316.58
7.2.00.0000.01419.25
7.1.100.0000.01318.25
7.1.70.0000.00716.84
7.1.60.0150.00319.30
7.1.50.0030.01316.71
7.1.00.0030.06722.40
7.0.200.0320.00614.86
7.0.140.0070.07021.97
7.0.120.0000.06322.09
7.0.60.0130.07319.93
7.0.50.0030.04317.88
7.0.40.0000.08020.00
7.0.30.0370.07020.21
7.0.20.0270.05020.00
7.0.10.0330.08320.30
7.0.00.0100.08020.19
5.6.280.0100.06720.81
5.6.210.0000.04720.68
5.6.200.0030.08318.20
5.6.190.0070.04720.47
5.6.180.0300.07720.59
5.6.170.0300.08320.50
5.6.160.0030.04020.51
5.6.150.0000.09318.12
5.6.140.0070.08318.21
5.6.130.0100.06318.08
5.6.120.0100.07020.98
5.6.110.0070.07020.98
5.6.100.0100.05320.86
5.6.90.0130.07721.01
5.6.80.0070.05020.50
5.6.70.0200.05020.42
5.5.350.0230.06720.39
5.5.340.0030.05317.98
5.5.330.0070.05020.16
5.5.320.0100.05020.17
5.5.310.0300.04720.13
5.5.300.0130.06317.98
5.5.290.0030.04017.92
5.5.280.0070.08320.84
5.5.270.0130.05320.75
5.5.260.0070.08020.72
5.5.250.0130.07320.49
5.5.240.0130.07020.12
5.4.450.0030.08019.15
5.4.440.0070.08019.11
5.4.430.0030.05019.25
5.4.420.0070.04319.13
5.4.410.0100.07319.00
5.4.400.0100.03318.92
5.4.390.0130.07319.17
5.4.380.0170.05018.79
5.4.370.0170.03719.18
5.4.360.0030.04019.16
5.4.350.0000.05719.18
5.4.340.0230.02719.18
5.4.320.0130.07019.11
5.4.310.0030.06319.18
5.4.300.0070.05019.10
5.4.290.0100.05019.18
5.4.280.0070.03719.15
5.4.270.0030.03719.07
5.4.260.0030.03718.82
5.4.250.0030.03718.80
5.4.240.0070.03319.21
5.4.230.0030.03719.07
5.4.220.0070.03319.07
5.4.210.0030.03719.16
5.4.200.0070.03319.11
5.4.190.0070.03719.13
5.4.180.0100.03319.17
5.4.170.0100.07019.07
5.4.160.0030.05319.06
5.4.150.0000.04018.78
5.4.140.0030.03716.28
5.4.130.0030.03716.28
5.4.120.0070.03316.32
5.4.110.0030.03316.41
5.4.100.0030.03316.60
5.4.90.0000.04716.32
5.4.80.0030.03316.23
5.4.70.0000.03716.22
5.4.60.0000.03716.28
5.4.50.0070.03316.24
5.4.40.0100.02716.27
5.4.30.0100.02716.26
5.4.20.0030.03316.34
5.4.10.0000.03716.37
5.4.00.0000.03715.68
5.3.290.0030.06014.63
5.3.280.0070.04314.38
5.3.270.0030.04014.53
5.3.260.0000.04714.50
5.3.250.0070.03314.54
5.3.240.0000.04014.59
5.3.230.0030.03714.53
5.3.220.0070.03714.54
5.3.210.0000.04314.50
5.3.200.0000.03714.50
5.3.190.0030.03714.46
5.3.180.0030.03714.51
5.3.170.0070.03314.49
5.3.160.0030.03714.48
5.3.150.0030.03714.50
5.3.140.0070.03014.56
5.3.130.0130.02714.47
5.3.120.0130.03014.46
5.3.110.0030.03714.52
5.3.100.0000.03713.99
5.3.90.0030.03713.96
5.3.80.0030.03313.84
5.3.70.0030.04013.95
5.3.60.0070.04013.95
5.3.50.0070.03713.92
5.3.40.0070.03013.95
5.3.30.0030.03713.83
5.3.20.0030.05713.64
5.3.10.0030.03713.47
5.3.00.0070.03013.58
5.2.170.0000.03011.04
5.2.160.0000.03311.12
5.2.150.0030.03011.11
5.2.140.0070.04711.07
5.2.130.0100.03311.02
5.2.120.0000.03010.99
5.2.110.0130.05011.03
5.2.100.0030.03011.27
5.2.90.0030.06311.09
5.2.80.0070.06311.08
5.2.70.0100.03711.03
5.2.60.0100.04711.02
5.2.50.0100.05710.89
5.2.40.0030.03710.87
5.2.30.0030.04310.89
5.2.20.0030.06311.11
5.2.10.0000.05310.86
5.2.00.0000.06310.87
5.1.60.0100.02710.03
5.1.50.0070.0379.98
5.1.40.0130.02710.12
5.1.30.0070.05310.32
5.1.20.0070.03310.30
5.1.10.0100.04310.05
5.1.00.0070.05010.04
5.0.50.0000.0278.52
5.0.40.0070.0238.45
5.0.30.0070.0278.37
5.0.20.0000.0438.21
5.0.10.0000.0338.21
5.0.00.0070.0538.20
4.4.90.0000.0237.97
4.4.80.0030.0377.97
4.4.70.0000.0237.97
4.4.60.0030.0377.97
4.4.50.0000.0377.97
4.4.40.0000.0277.97
4.4.30.0000.0207.97
4.4.20.0000.0207.97
4.4.10.0100.0277.97
4.4.00.0000.0437.97
4.3.110.0030.0237.97
4.3.100.0030.0277.97
4.3.90.0000.0307.97
4.3.80.0000.0507.97
4.3.70.0000.0307.97
4.3.60.0000.0377.97
4.3.50.0070.0137.97
4.3.40.0000.0307.97
4.3.30.0070.0277.97
4.3.20.0030.0207.97
4.3.10.0000.0377.97
4.3.00.0100.0237.97

preferences:
44.47 ms | 401 KiB | 5 Q