3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ''; var_dump(isset($a));

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)
8.3.60.0150.00618.43
8.3.50.0100.00316.14
8.3.40.0110.00418.51
8.3.30.0040.01118.36
8.3.20.0040.00419.65
8.3.10.0110.00321.01
8.3.00.0100.00721.10
8.2.180.0140.00018.41
8.2.170.0110.00422.96
8.2.160.0030.01020.52
8.2.150.0000.00824.18
8.2.140.0090.00422.61
8.2.130.0050.00823.36
8.2.120.0110.00519.50
8.2.110.0100.00720.11
8.2.100.0140.00618.26
8.2.90.0110.00919.74
8.2.80.0200.00318.31
8.2.70.0200.00518.20
8.2.60.0140.00418.28
8.2.50.0140.00618.65
8.2.40.0130.00518.87
8.2.30.0140.00518.42
8.2.20.0120.00618.07
8.2.10.0120.00718.05
8.2.00.0140.00518.18
8.1.280.0160.00025.92
8.1.270.0100.00421.45
8.1.260.0090.00624.17
8.1.250.0100.00324.94
8.1.240.0020.00919.64
8.1.230.0090.00519.40
8.1.220.0120.00418.25
8.1.210.0090.00918.45
8.1.200.0150.00217.92
8.1.190.0100.00617.54
8.1.180.0090.00618.16
8.1.170.0140.00218.20
8.1.160.0120.00617.99
8.1.150.0120.00518.20
8.1.140.0120.00518.10
8.1.130.0100.00618.03
8.1.120.0120.00417.68
8.1.110.0090.00717.68
8.1.100.0130.00317.71
8.1.90.0120.00417.65
8.1.80.0090.00617.71
8.1.70.0090.00617.64
8.1.60.0110.00517.68
8.1.50.0100.00717.64
8.1.40.0140.00417.69
8.1.30.0100.00617.74
8.1.20.0130.00517.67
8.1.10.0130.00517.60
8.1.00.0130.00517.56
8.0.300.0110.00418.62
8.0.290.0140.00417.44
8.0.280.0130.00517.81
8.0.270.0100.00717.67
8.0.260.0140.00517.83
8.0.250.0090.00517.42
8.0.240.0120.00617.45
8.0.230.0110.00517.42
8.0.220.0140.00417.48
8.0.210.0110.00517.39
8.0.200.0110.00417.37
8.0.190.0100.00517.31
8.0.180.0110.00517.30
8.0.170.0110.00517.29
8.0.160.0120.00417.29
8.0.150.0120.00517.22
8.0.140.0120.00417.22
8.0.130.0100.00516.67
8.0.120.0110.00516.67
8.0.110.0110.00516.67
8.0.100.0130.00416.62
8.0.90.0130.00416.65
8.0.80.0130.00316.64
8.0.70.0130.00416.64
8.0.60.0110.00516.65
8.0.50.0100.00716.65
8.0.30.0120.00616.71
8.0.20.0120.00616.85
8.0.10.0140.00516.76
8.0.00.0110.00516.88
7.4.330.0120.00116.72
7.4.320.0130.00417.24
7.4.300.0120.00517.17
7.4.290.0120.00417.11
7.4.280.0130.00517.13
7.4.270.0120.00617.03
7.4.260.0120.00516.70
7.4.250.0130.00416.45
7.4.240.0120.00416.47
7.4.230.0130.00416.46
7.4.220.0110.00516.50
7.4.210.0110.00516.43
7.4.200.0110.00616.47
7.4.190.0130.00416.52
7.4.180.0120.00416.52
7.4.160.0130.00416.47
7.4.150.0130.00416.51
7.4.140.0130.00516.65
7.4.130.0120.00616.40
7.4.120.0120.00616.34
7.4.110.0130.00516.41
7.4.100.0130.00516.45
7.4.90.0120.00516.40
7.4.80.0110.00716.52
7.4.70.0130.00516.33
7.4.60.0130.00416.40
7.4.50.0120.00516.32
7.4.40.0120.00616.31
7.4.30.0120.00616.35
7.4.20.0100.00716.36
7.4.10.0100.00716.24
7.4.00.0120.00616.20
7.3.330.0130.00316.30
7.3.320.0120.00416.04
7.3.310.0120.00316.28
7.3.300.0130.00416.31
7.3.290.0130.00416.24
7.3.280.0110.00716.21
7.3.270.0120.00516.30
7.3.260.0130.00416.26
7.3.250.0130.00516.23
7.3.240.0110.00616.24
7.3.230.0120.00616.22
7.3.220.0140.00416.22
7.3.210.0130.00516.17
7.3.200.0140.00416.20
7.3.190.0120.00616.22
7.3.180.0120.00616.21
7.3.170.0120.00616.28
7.3.160.0120.00616.21
7.3.150.0130.00516.16
7.3.140.0130.00516.22
7.3.130.0130.00616.18
7.3.120.0110.00616.09
7.3.110.0120.00616.00
7.3.100.0120.00616.04
7.3.90.0130.00516.16
7.3.80.0110.00616.07
7.3.70.0120.00516.11
7.3.60.0120.00516.14
7.3.50.0110.00716.11
7.3.40.0110.00616.12
7.3.30.0120.00616.13
7.3.20.0100.00817.01
7.3.10.0110.00716.99
7.3.00.0130.00616.96
7.2.340.0140.00616.30
7.2.330.0120.00816.31
7.2.320.0120.00816.30
7.2.310.0130.00816.29
7.2.300.0140.00516.28
7.2.290.0150.00516.32
7.2.280.0140.00616.28
7.2.270.0130.00616.30
7.2.260.0100.00916.22
7.2.250.0130.00716.19
7.2.240.0140.00516.19
7.2.230.0130.00616.22
7.2.220.0120.00716.11
7.2.210.0130.00616.15
7.2.200.0140.00616.28
7.2.190.0120.00716.24
7.2.180.0140.00616.19
7.2.170.0130.00716.25
7.2.160.0130.00616.29
7.2.150.0140.00617.13
7.2.140.0140.00717.22
7.2.130.0140.00717.29
7.2.120.0150.00617.25
7.2.110.0140.00617.26
7.2.100.0140.00617.23
7.2.90.0140.00617.21
7.2.80.0130.00717.07
7.2.70.0150.00617.11
7.2.60.0140.00617.08
7.2.50.0150.00617.09
7.2.40.0150.00717.18
7.2.30.0170.00717.13
7.2.20.0260.00617.17
7.2.10.0150.00617.14
7.2.00.0140.00717.14
7.1.330.0190.00616.33
7.1.320.0130.00616.33
7.1.310.0130.00616.39
7.1.300.0130.00616.36
7.1.290.0130.00616.35
7.1.280.0150.00516.36
7.1.270.0150.00616.41
7.1.260.0130.00716.33
7.1.250.0150.00616.31
7.1.240.0150.00516.32
7.1.230.0140.00616.35
7.1.220.0170.00616.38
7.1.210.0140.00716.38
7.1.200.0160.00516.40
7.1.190.0150.00516.34
7.1.180.0160.00616.28
7.1.170.0170.00516.28
7.1.160.0150.00516.28
7.1.150.0160.00516.30
7.1.140.0160.00616.32
7.1.130.0150.00716.33
7.1.120.0200.00616.32
7.1.110.0180.00616.28
7.1.100.0140.00716.25
7.1.90.0190.00716.30
7.1.80.0200.00616.36
7.1.70.0160.00616.22
7.1.60.0170.00718.34
7.1.50.0180.00718.34
7.1.40.0200.00718.35
7.1.30.0190.00718.33
7.1.20.0170.00818.34
7.1.10.0150.00616.21
7.1.00.0150.00616.19
7.0.330.0140.00616.14
7.0.320.0140.00516.15
7.0.310.0140.00616.02
7.0.300.0150.00516.03
7.0.290.0160.00516.01
7.0.280.0140.00616.16
7.0.270.0140.00616.07
7.0.260.0140.00616.04
7.0.250.0160.00616.13
7.0.240.0130.00716.16
7.0.230.0180.00516.24
7.0.220.0240.00516.14
7.0.210.0170.00516.06
7.0.200.0150.00716.08
7.0.190.0140.00716.06
7.0.180.0170.00516.05
7.0.170.0150.00716.07
7.0.160.0170.00616.00
7.0.150.0160.00516.03
7.0.140.0140.00615.95
7.0.130.0150.00615.99
7.0.120.0150.00616.02
7.0.110.0160.00615.94
7.0.100.0130.00915.99
7.0.90.0160.00615.91
7.0.80.0160.00815.91
7.0.70.0140.00615.88
7.0.60.0150.00615.93
7.0.50.0130.00715.89
7.0.40.0160.00615.90
7.0.30.0150.00515.87
7.0.20.0160.00515.84
7.0.10.0160.00615.91
7.0.00.0200.00515.85
5.6.400.0130.00515.82
5.6.390.0120.00715.81
5.6.380.0130.00615.82
5.6.370.0140.00515.79
5.6.360.0130.00715.82
5.6.350.0130.00615.86
5.6.340.0140.00515.83
5.6.330.0120.00715.81
5.6.320.0120.00715.83
5.6.310.0120.00715.84
5.6.300.0130.00515.73
5.6.290.0130.00715.83
5.6.280.0130.00715.82
5.6.270.0130.00615.84
5.6.260.0120.00715.79
5.6.250.0140.00615.81
5.6.240.0130.00615.88
5.6.230.0130.00715.88
5.6.220.0130.00515.89
5.6.210.0120.00815.92
5.6.200.0120.00715.91
5.6.190.0130.00515.88
5.6.180.0130.00715.87
5.6.170.0120.00715.85
5.6.160.0130.00615.87
5.6.150.0130.00615.88
5.6.140.0140.00515.85
5.6.130.0130.00615.86
5.6.120.0120.00715.83
5.6.110.0120.00715.78
5.6.100.0120.00715.76
5.6.90.0140.00515.79
5.6.80.0120.00615.78
5.6.70.0120.00615.85
5.6.60.0120.00615.85
5.6.50.0130.00615.75
5.6.40.0120.00615.81
5.6.30.0120.00715.82
5.6.20.0130.00615.77
5.6.10.0120.00615.76
5.6.00.0130.00515.80

preferences:
53.31 ms | 400 KiB | 5 Q