3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(is_string('324', 'test'));

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)
8.3.40.0090.00618.96
8.3.30.0070.00720.20
8.3.20.0040.00420.33
8.3.10.0040.00422.10
8.3.00.0040.00422.53
8.2.170.0100.00322.96
8.2.160.0110.00422.12
8.2.150.0040.00424.18
8.2.140.0090.00024.66
8.2.130.0070.01026.16
8.2.120.0040.00421.00
8.2.110.0060.00322.12
8.2.100.0040.00817.84
8.2.90.0040.00419.23
8.2.80.0000.00819.31
8.2.70.0060.00317.63
8.2.60.0060.00317.80
8.2.50.0080.00018.07
8.2.40.0040.00418.14
8.2.30.0040.00418.06
8.2.20.0050.00317.66
8.2.10.0050.00217.61
8.2.00.0040.00417.67
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00723.91
8.1.230.0080.00319.06
8.1.220.0030.00617.74
8.1.210.0080.00018.77
8.1.200.0040.00417.23
8.1.190.0000.00817.41
8.1.180.0000.01318.10
8.1.170.0040.00418.55
8.1.160.0070.00018.65
8.1.150.0040.00418.41
8.1.140.0040.00417.37
8.1.130.0060.00017.76
8.1.120.0040.00417.36
8.1.110.0040.00417.25
8.1.100.0000.00717.38
8.1.90.0040.00417.21
8.1.80.0040.00417.23
8.1.70.0030.00317.30
8.1.60.0060.00317.49
8.1.50.0000.00717.51
8.1.40.0000.00817.44
8.1.30.0000.00817.59
8.1.20.0030.00617.44
8.1.10.0050.00317.45
8.1.00.0000.00717.37
8.0.300.0070.00018.77
8.0.290.0000.00717.18
8.0.280.0080.00018.31
8.0.270.0040.00417.24
8.0.260.0040.00416.70
8.0.250.0030.00316.94
8.0.240.0050.00216.93
8.0.230.0020.00516.84
8.0.220.0070.00016.79
8.0.210.0000.00716.78
8.0.200.0050.00216.96
8.0.190.0000.00716.94
8.0.180.0050.00216.79
8.0.170.0030.00516.79
8.0.160.0070.00016.84
8.0.150.0050.00316.72
8.0.140.0040.00416.68
8.0.130.0030.00313.31
8.0.120.0080.00016.78
8.0.110.0030.00616.91
8.0.100.0040.00416.76
8.0.90.0050.00216.88
8.0.80.0070.00716.92
8.0.70.0070.00016.79
8.0.60.0040.00416.78
8.0.50.0070.00016.78
8.0.30.0120.00717.15
8.0.20.0080.01117.40
8.0.10.0050.00216.95
8.0.00.0130.00516.71
7.4.330.0030.00315.00
7.4.320.0030.00316.49
7.4.300.0030.00316.39
7.4.290.0060.00316.34
7.4.280.0070.00016.32
7.4.270.0000.00716.50
7.4.260.0000.00513.16
7.4.250.0050.00216.34
7.4.240.0030.00516.42
7.4.230.0030.00316.54
7.4.220.0180.00016.47
7.4.210.0060.00916.52
7.4.200.0070.00016.30
7.4.190.0000.00716.46
7.4.160.0160.00016.50
7.4.150.0100.00717.40
7.4.140.0130.00817.86
7.4.130.0110.01016.37
7.4.120.0120.00516.48
7.4.110.0040.01316.25
7.4.100.0130.00416.54
7.4.90.0110.00716.22
7.4.80.0090.00919.39
7.4.70.0070.01016.40
7.4.60.0100.00716.27
7.4.50.0000.00816.42
7.4.40.0030.01422.77
7.4.30.0110.00816.57
7.4.00.0070.01014.88
7.3.330.0000.00513.13
7.3.320.0000.00512.93
7.3.310.0040.00416.09
7.3.300.0070.00016.11
7.3.290.0070.01116.16
7.3.280.0100.00716.21
7.3.270.0120.00617.40
7.3.260.0170.00316.35
7.3.250.0120.00516.31
7.3.240.0030.01316.22
7.3.230.0140.00316.39
7.3.210.0150.00316.32
7.3.200.0130.00319.39
7.3.190.0090.00916.44
7.3.180.0060.00916.40
7.3.170.0090.00616.32
7.3.160.0030.01216.17
7.3.120.0070.00714.68
7.2.330.0060.01216.14
7.2.320.0060.01016.22
7.2.310.0090.00916.62
7.2.300.0060.00916.14
7.2.290.0090.01216.30
7.1.100.0000.01018.17
7.1.70.0060.00316.90
7.1.60.0090.01619.32
7.1.50.0100.01016.54
7.1.00.0030.03322.36
7.0.200.0080.00016.62
7.0.140.0030.06721.93
7.0.100.0200.08319.94
7.0.90.0030.06019.95
7.0.80.0070.04319.91
7.0.70.0370.04019.98
7.0.60.0100.03719.93
7.0.50.0370.04720.38
7.0.40.0130.07720.09
7.0.30.0100.07320.17
7.0.20.0130.06320.13
7.0.10.0100.07320.11
7.0.00.0130.07020.06
5.6.280.0030.07321.14
5.6.250.0100.06320.74
5.6.240.0070.08020.55
5.6.230.0030.06720.63
5.6.220.0070.08020.48
5.6.210.0000.07320.45
5.6.200.0100.05021.03
5.6.190.0030.04721.11
5.6.180.0130.06721.16
5.6.170.0130.08020.94
5.6.160.0000.06720.93
5.6.150.0130.06320.95
5.6.140.0100.03720.95
5.6.130.0170.07720.98
5.6.120.0100.04720.96
5.6.110.0100.07021.07
5.6.100.0070.06020.93
5.6.90.0130.03320.92
5.6.80.0030.04020.44
5.6.70.0170.07320.32
5.6.60.0000.04320.34
5.6.50.0070.03720.38
5.6.40.0030.07020.39
5.6.30.0070.06320.38
5.6.20.0030.07020.30
5.6.10.0000.05320.30
5.6.00.0030.07720.41
5.5.380.0100.04020.45
5.5.370.0170.06020.34
5.5.360.0130.07320.34
5.5.350.0030.05020.42
5.5.340.0100.08320.75
5.5.330.0030.06320.92
5.5.320.0070.07320.92
5.5.310.0070.04720.77
5.5.300.0070.07020.79
5.5.290.0030.05320.74
5.5.280.0100.08020.86
5.5.270.0030.04020.85
5.5.260.0070.08720.90
5.5.250.0070.05720.67
5.5.240.0100.06320.23
5.5.230.0130.03320.30
5.5.220.0070.06720.01
5.5.210.0000.04720.21
5.5.200.0100.07020.18
5.5.190.0030.05320.21
5.5.180.0170.07019.98
5.5.160.0100.07320.12
5.5.150.0130.04720.25
5.5.140.0070.03720.07
5.5.130.0030.05020.11
5.5.120.0030.05020.23
5.5.110.0030.08020.07
5.5.100.0070.05719.97
5.5.90.0000.04720.09
5.5.80.0030.04020.05
5.5.70.0030.07320.09
5.5.60.0070.03719.93
5.5.50.0030.07719.92
5.5.40.0030.07319.95
5.5.30.0070.04319.98
5.5.20.0130.07720.04
5.5.10.0070.03720.09
5.5.00.0070.04320.02
5.4.450.0100.05319.41
5.4.440.0070.08019.33
5.4.430.0100.04719.22
5.4.420.0030.08019.41
5.4.410.0000.04018.98
5.4.400.0070.03718.98
5.4.390.0070.06718.96
5.4.380.0070.03019.05
5.4.370.0070.04318.80
5.4.360.0100.04318.79
5.4.350.0000.05019.10
5.4.340.0070.06319.11
5.4.320.0100.07719.14
5.4.310.0070.07318.90
5.4.300.0070.04019.08
5.4.290.0100.07018.97
5.4.280.0070.03718.96
5.4.270.0030.05319.02
5.4.260.0030.06318.80
5.4.250.0070.03318.97
5.4.240.0030.07018.78
5.4.230.0030.07718.80
5.4.220.0070.04318.80
5.4.210.0100.06719.02
5.4.200.0070.04318.95
5.4.190.0070.05718.93
5.4.180.0070.04719.10
5.4.170.0130.04719.13
5.4.160.0070.04319.20
5.4.150.0170.03719.14
5.4.140.0130.06316.29
5.4.130.0100.06716.01
5.4.120.0100.07316.11
5.4.110.0100.05716.30
5.4.100.0070.06316.30
5.4.90.0130.06016.34
5.4.80.0030.07316.33
5.4.70.0130.06316.29
5.4.60.0100.03716.21
5.4.50.0000.07016.37
5.4.40.0030.04316.43
5.4.30.0030.07316.33
5.4.20.0200.04016.35
5.4.10.0030.04716.32
5.4.00.0030.03715.77
5.3.290.0100.07314.65
5.3.280.0070.04714.58
5.3.270.0030.07314.57
5.3.260.0100.06714.61
5.3.250.0070.05314.58
5.3.240.0100.07714.61
5.3.230.0000.05314.45
5.3.220.0070.07314.55
5.3.210.0070.06014.52
5.3.200.0030.04314.38
5.3.190.0030.07714.51
5.3.180.0130.04014.56
5.3.170.0030.08714.43
5.3.160.0000.07314.40
5.3.150.0070.08014.54
5.3.140.0070.05314.36
5.3.130.0170.04014.40
5.3.120.0070.07314.45
5.3.110.0170.07314.50
5.3.100.0130.06714.02
5.3.90.0070.07713.98
5.3.80.0070.07313.95
5.3.70.0030.04313.96
5.3.60.0030.04313.99
5.3.50.0000.04013.91
5.3.40.0030.07313.80
5.3.30.0100.03713.89
5.3.20.0100.03713.66
5.3.10.0030.04013.51
5.3.00.0100.03713.41
5.2.170.0130.04711.16
5.2.160.0030.03010.98
5.2.150.0100.04011.14
5.2.140.0030.03311.20
5.2.130.0030.05711.09
5.2.120.0000.03710.93
5.2.110.0070.04310.88
5.2.100.0170.04711.07
5.2.90.0030.05711.12
5.2.80.0030.03711.13
5.2.70.0100.05710.93
5.2.60.0070.04311.04
5.2.50.0030.03010.86
5.2.40.0000.04310.86
5.2.30.0000.04711.04
5.2.20.0100.04310.81
5.2.10.0070.02310.87
5.2.00.0000.04310.63
5.1.60.0000.0279.97
5.1.50.0030.0239.87
5.1.40.0070.02010.00
5.1.30.0070.02310.38
5.1.20.0070.02710.37
5.1.10.0000.0279.94
5.1.00.0070.02010.04
5.0.50.0000.0208.62
5.0.40.0030.0208.39
5.0.30.0030.0238.27
5.0.20.0000.0208.25
5.0.10.0000.0208.25
5.0.00.0000.0338.25
4.4.90.0070.0238.25
4.4.80.0000.0308.25
4.4.70.0070.0338.25
4.4.60.0030.0138.25
4.4.50.0000.0178.25
4.4.40.0030.0238.25
4.4.30.0030.0138.25
4.4.20.0000.0178.25
4.4.10.0030.0138.25
4.4.00.0000.0278.25
4.3.110.0000.0178.25
4.3.100.0030.0138.25
4.3.90.0000.0178.25
4.3.80.0000.0238.25
4.3.70.0000.0178.25
4.3.60.0030.0138.25
4.3.50.0000.0178.25
4.3.40.0000.0238.25
4.3.30.0000.0178.25
4.3.20.0030.0138.25
4.3.10.0030.0138.25
4.3.00.0000.0178.25

preferences:
39.8 ms | 400 KiB | 5 Q