3v4l.org

run code in 300+ PHP versions simultaneously
<?php $key = 'bob'; $key.='cat'; var_dump($key);

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)
8.3.60.0180.00016.50
8.3.50.0080.00617.88
8.3.40.0110.00418.64
8.3.30.0040.01118.96
8.3.20.0070.00020.21
8.3.10.0050.00321.78
8.3.00.0040.00419.38
8.2.180.0170.00316.63
8.2.170.0120.00322.96
8.2.160.0070.00720.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0080.00019.23
8.2.110.0000.00919.27
8.2.100.0040.00817.63
8.2.90.0030.00619.05
8.2.80.0080.00017.97
8.2.70.0040.00417.63
8.2.60.0040.00418.04
8.2.50.0050.00318.07
8.2.40.0040.00418.21
8.2.30.0000.00818.05
8.2.20.0070.00017.67
8.2.10.0000.00817.86
8.2.00.0030.00517.61
8.1.280.0110.01125.92
8.1.270.0040.00420.65
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0100.00023.97
8.1.230.0040.00817.66
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0080.00018.59
8.1.160.0070.00021.95
8.1.150.0040.00418.80
8.1.140.0040.00417.30
8.1.130.0030.00317.77
8.1.120.0000.00817.39
8.1.110.0000.00817.35
8.1.100.0020.00517.39
8.1.90.0030.00317.40
8.1.80.0050.00317.28
8.1.70.0040.00417.28
8.1.60.0000.00817.44
8.1.50.0030.00517.45
8.1.40.0040.00417.34
8.1.30.0090.00017.56
8.1.20.0030.00517.54
8.1.10.0070.00017.43
8.1.00.0080.00017.32
8.0.300.0000.00718.77
8.0.290.0070.00016.75
8.0.280.0030.00318.37
8.0.270.0070.00017.10
8.0.260.0030.00317.13
8.0.250.0050.00316.86
8.0.240.0050.00216.86
8.0.230.0000.00716.89
8.0.220.0070.00016.84
8.0.210.0040.00416.89
8.0.200.0000.00716.74
8.0.190.0050.00316.89
8.0.180.0000.00716.76
8.0.170.0040.00416.85
8.0.160.0030.00616.86
8.0.150.0000.00816.65
8.0.140.0000.00716.77
8.0.130.0030.00313.25
8.0.120.0070.00016.79
8.0.110.0040.00416.70
8.0.100.0000.00816.93
8.0.90.0000.00716.65
8.0.80.0030.01316.72
8.0.70.0050.00216.70
8.0.60.0000.00816.83
8.0.50.0070.00016.86
8.0.30.0120.01116.90
8.0.20.0110.01117.40
8.0.10.0040.00416.88
8.0.00.0090.00916.59
7.4.330.0060.00015.03
7.4.320.0030.00316.36
7.4.300.0000.00716.43
7.4.290.0070.00316.53
7.4.280.0030.00516.42
7.4.270.0030.00616.43
7.4.260.0000.00616.51
7.4.250.0000.00716.39
7.4.240.0030.00316.45
7.4.230.0000.00716.31
7.4.220.0100.01016.48
7.4.210.0100.00516.55
7.4.200.0040.00416.32
7.4.160.0120.00616.38
7.4.150.0070.01117.40
7.4.140.0090.00917.86
7.4.130.0050.01616.42
7.4.120.0150.00616.41
7.4.110.0140.01016.41
7.4.100.0120.00616.49
7.4.90.0120.00616.27
7.4.80.0160.01019.39
7.4.70.0100.00616.51
7.4.60.0100.00716.46
7.4.50.0040.00416.19
7.4.40.0060.01016.22
7.4.30.0070.01016.53
7.4.00.0100.00714.71
7.3.330.0050.00012.87
7.3.320.0040.00812.88
7.3.310.0030.00315.94
7.3.300.0040.00416.12
7.3.290.0070.00016.15
7.3.280.0110.00916.15
7.3.270.0150.00917.40
7.3.260.0120.00616.35
7.3.250.0080.01016.35
7.3.240.0070.01116.46
7.3.230.0100.00716.39
7.3.210.0110.00616.24
7.3.200.0060.01219.39
7.3.190.0100.01016.26
7.3.180.0080.00816.47
7.3.170.0060.01516.27
7.3.160.0140.00616.29
7.3.10.0090.00716.43
7.3.00.0080.00516.42
7.2.330.0110.00616.44
7.2.320.0110.00716.42
7.2.310.0110.00616.48
7.2.300.0060.00916.51
7.2.290.0140.00316.35
7.2.130.0170.00416.66
7.2.120.0090.00616.66
7.2.110.0090.00716.43
7.2.100.0090.00616.64
7.2.90.0130.00416.43
7.2.80.0050.01116.48
7.2.70.0050.01116.38
7.2.60.0100.00716.48
7.2.50.0100.01016.41
7.2.40.0170.00116.19
7.2.30.0100.01016.50
7.2.20.0130.00816.68
7.2.10.0110.01016.55
7.2.00.0070.00917.56
7.1.250.0110.00515.73
7.1.100.0060.00318.15
7.1.70.0060.00317.27
7.1.60.0120.01219.50
7.1.50.0000.01416.91
7.1.00.0030.07722.36
7.0.200.0110.00014.58
7.0.140.0070.06322.09
7.0.60.0030.04019.82
7.0.50.0100.08017.89
7.0.40.0030.04720.30
7.0.30.0270.08320.21
7.0.20.0300.07020.01
7.0.10.0030.05320.20
7.0.00.0070.07320.03
5.6.280.0000.07721.03
5.6.210.0070.04020.47
5.6.200.0070.04318.17
5.6.190.0130.08020.57
5.6.180.0000.05020.64
5.6.170.0370.03720.50
5.6.160.0000.06020.50
5.6.150.0130.07018.11
5.6.140.0130.07718.14
5.6.130.0070.08018.10
5.6.120.0170.06721.11
5.6.110.0030.04320.86
5.6.100.0100.07720.97
5.6.90.0100.07720.99
5.6.80.0070.07020.38
5.5.350.4300.03720.39
5.5.340.0100.07717.96
5.5.330.0130.06020.40
5.5.320.0330.07020.15
5.5.310.0370.07320.30
5.5.300.0130.06717.91
5.5.290.0100.07717.92
5.5.280.0130.08020.87
5.5.270.0000.04320.71
5.5.260.0170.07720.86
5.5.250.0170.07020.61
5.5.240.0100.08320.25
5.4.450.0630.05319.42
5.4.440.0770.05019.48
5.4.430.0730.06319.60
5.4.420.0900.06019.38
5.4.410.0930.05319.47
5.4.400.0430.07018.69
5.4.390.0370.06718.58
5.4.380.0400.06718.40
5.4.370.0430.05718.68
5.4.360.0370.08018.57
5.4.350.0530.06718.73
5.4.340.0370.07318.49
5.4.320.0530.06018.71
5.4.310.0430.05318.49
5.4.300.0430.07018.61
5.4.290.0530.04718.62
5.4.280.5500.06318.70
5.4.270.0300.07718.54
5.4.260.0270.07718.66
5.4.250.0500.06718.54
5.4.240.0430.06318.72
5.4.230.0470.06718.71
5.4.220.0530.05318.50
5.4.210.0570.07018.47
5.4.200.0400.07316.43
5.4.190.0330.07018.68
5.4.180.0330.07018.52
5.4.170.0370.07318.71
5.4.160.0400.06018.55
5.4.150.0630.04718.49
5.4.140.0570.07016.05
5.4.130.0570.05716.34
5.4.120.0530.07016.27
5.4.110.0570.06316.05
5.4.100.0500.06316.25
5.4.90.0600.07316.32
5.4.80.0330.06316.20
5.4.70.0430.05016.14
5.4.60.0330.06716.21
5.4.50.0370.06016.32
5.4.40.0370.05316.12
5.4.30.0370.05016.18
5.4.20.0500.05316.18
5.4.10.0370.06016.13
5.4.00.0330.06715.53
5.3.290.0330.06714.63
5.3.280.0330.05714.64
5.3.270.0370.07014.67
5.3.260.0400.06014.61
5.3.250.0430.05314.61
5.3.240.0230.07314.63
5.3.230.0370.05314.57
5.3.220.0370.06714.57
5.3.210.0430.06014.48
5.3.200.0270.07014.66
5.3.190.0370.06014.56
5.3.180.0370.04314.54
5.3.170.0570.04314.56
5.3.160.0330.06714.55
5.3.150.0300.06714.53
5.3.140.0330.06314.64
5.3.130.0530.05714.57
5.3.120.0500.06014.49
5.3.110.0530.06314.49
5.3.100.0400.05713.98
5.3.90.0370.05313.98
5.3.80.0330.06013.99
5.3.70.0370.05314.11
5.3.60.0670.04013.91
5.3.50.0500.05014.04
5.3.40.0230.06013.93
5.3.30.0330.06013.88
5.3.20.0370.05713.64
5.3.10.0300.06313.65
5.3.00.0570.05713.54
5.2.170.0370.05011.11
5.2.160.0270.06011.22
5.2.150.0300.06311.07
5.2.140.0400.05011.18
5.2.130.0300.05711.07
5.2.120.0370.05711.11
5.2.110.0230.06311.07
5.2.100.0330.05011.03
5.2.90.0230.06711.08
5.2.80.0330.05711.15
5.2.70.0300.05711.05
5.2.60.0270.06011.10
5.2.50.0370.05310.96
5.2.40.0230.05011.03
5.2.30.0300.06011.11
5.2.20.0370.05011.07
5.2.10.0330.04310.91
5.2.00.0400.04710.72
5.1.60.0230.04710.09
5.1.50.0200.05010.08
5.1.40.0270.04010.11
5.1.30.0200.05710.34
5.1.20.0300.04710.46
5.1.10.0270.05010.08
5.1.00.0230.05010.08
5.0.50.0200.0408.54
5.0.40.0230.0308.38
5.0.30.0200.0508.23
5.0.20.0130.0338.39
5.0.10.0170.0338.20
5.0.00.0270.0438.14
4.4.90.0170.0277.01
4.4.80.0100.0377.01
4.4.70.0270.0207.01
4.4.60.0230.0307.01
4.4.50.0270.0237.01
4.4.40.0200.0477.01
4.4.30.0200.0177.01
4.4.20.0170.0277.01
4.4.10.0130.0337.01
4.4.00.0130.0377.01
4.3.110.0170.0237.01
4.3.100.0100.0237.01
4.3.90.0070.0237.01
4.3.80.0100.0407.01
4.3.70.0130.0237.01
4.3.60.0100.0307.01
4.3.50.0170.0237.01
4.3.40.0170.0377.01
4.3.30.0070.0277.01
4.3.20.0070.0237.01
4.3.10.0030.0277.01
4.3.00.0030.0276.79

preferences:
44.29 ms | 400 KiB | 5 Q