3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isInteger($a){ return (string)(int)$a === (string)$a; } var_dump(isInteger(10)); var_dump(isInteger(10.01)); var_dump(isInteger("10")); var_dump(isInteger("10.01")); var_dump(isInteger(0x10)); var_dump(isInteger("0x10")); var_dump(isInteger('a')); var_dump(isInteger(null)); var_dump(isInteger(false));

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)
8.3.60.0150.00316.38
8.3.50.0140.00017.79
8.3.40.0110.00418.67
8.3.30.0100.00319.04
8.3.20.0000.00820.22
8.3.10.0080.00021.91
8.3.00.0040.00419.01
8.2.180.0120.00918.16
8.2.170.0100.01022.96
8.2.160.0100.00322.01
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0120.00017.91
8.2.110.0000.01020.35
8.2.100.0090.00317.79
8.2.90.0000.00817.91
8.2.80.0000.00817.97
8.2.70.0090.00017.50
8.2.60.0050.00317.80
8.2.50.0040.00418.07
8.2.40.0000.00818.09
8.2.30.0070.00017.87
8.2.20.0040.00417.48
8.2.10.0050.00217.81
8.2.00.0030.00617.65
8.1.280.0180.00325.92
8.1.270.0040.00420.40
8.1.260.0000.00726.35
8.1.250.0000.00728.09
8.1.240.0080.00022.22
8.1.230.0110.00020.82
8.1.220.0040.00417.74
8.1.210.0000.00818.84
8.1.200.0030.00617.22
8.1.190.0040.00417.09
8.1.180.0060.00318.10
8.1.170.0080.00020.43
8.1.160.0070.00021.87
8.1.150.0050.00318.69
8.1.140.0080.00017.39
8.1.130.0030.00317.72
8.1.120.0030.00317.38
8.1.110.0020.00517.25
8.1.100.0000.00717.25
8.1.90.0000.00717.41
8.1.80.0000.00817.42
8.1.70.0030.00317.43
8.1.60.0040.00417.50
8.1.50.0000.00817.48
8.1.40.0050.00317.43
8.1.30.0030.00617.49
8.1.20.0080.00017.42
8.1.10.0040.00417.36
8.1.00.0050.00217.37
8.0.300.0030.00520.13
8.0.290.0060.00316.58
8.0.280.0070.00018.33
8.0.270.0000.00817.14
8.0.260.0000.00617.09
8.0.250.0070.00016.75
8.0.240.0040.00416.82
8.0.230.0030.00316.87
8.0.220.0040.00416.63
8.0.210.0030.00316.70
8.0.200.0030.00316.73
8.0.190.0040.00416.85
8.0.180.0040.00416.73
8.0.170.0040.00416.86
8.0.160.0000.00716.75
8.0.150.0000.00716.78
8.0.140.0040.00416.63
8.0.130.0000.00613.21
8.0.120.0000.00816.69
8.0.110.0040.00416.67
8.0.100.0040.00416.78
8.0.90.0040.00416.81
8.0.80.0060.00916.79
8.0.70.0050.00316.72
8.0.60.0030.00516.66
8.0.50.0000.00716.56
8.0.30.0100.00917.09
8.0.20.0120.00617.40
8.0.10.0000.00716.95
8.0.00.0090.00816.83
7.4.330.0050.00015.05
7.4.320.0000.00616.49
7.4.300.0000.00616.44
7.4.290.0070.00016.43
7.4.280.0000.00816.57
7.4.270.0000.00716.55
7.4.260.0000.01116.41
7.4.250.0000.00716.40
7.4.240.0060.00216.51
7.4.230.0040.00416.34
7.4.220.0090.00916.59
7.4.210.0070.00716.44
7.4.200.0000.00716.60
7.4.160.0090.00916.42
7.4.150.0090.00917.40
7.4.140.0070.01017.86
7.4.130.0090.00816.39
7.4.120.0130.00416.37
7.4.110.0060.02116.55
7.4.100.0100.01316.48
7.4.90.0100.00616.46
7.4.80.0070.01316.34
7.4.70.0120.00616.67
7.4.60.0160.00616.45
7.4.50.0040.00416.17
7.4.40.0120.00916.54
7.4.30.0030.01416.55
7.4.00.0040.01114.77
7.3.330.0000.00513.32
7.3.320.0090.00413.16
7.3.310.0000.00716.27
7.3.300.0030.00516.21
7.3.290.0060.01016.32
7.3.280.0070.01016.20
7.3.270.0060.01617.40
7.3.260.0100.00716.41
7.3.250.0090.00816.49
7.3.240.0160.00716.31
7.3.230.0150.00316.44
7.3.210.0070.01016.44
7.3.200.0100.01019.39
7.3.190.0120.01016.44
7.3.180.0050.01116.36
7.3.170.0070.01516.27
7.3.160.0140.00716.42
7.2.330.0100.01016.77
7.2.320.0110.00716.61
7.2.310.0070.01116.63
7.2.300.0000.01716.68
7.2.290.0060.01516.82
7.2.60.0030.01216.80
7.2.00.0000.01619.39
7.1.200.0080.00415.73
7.1.100.0030.00717.69
7.1.70.0040.00717.29
7.1.60.0150.00919.50
7.1.50.0070.01416.76
7.1.00.0070.07322.45
7.0.200.0210.00314.89
7.0.140.0070.08021.90
7.0.60.0030.08019.93
7.0.50.0100.08317.88
7.0.40.0000.04720.14
7.0.30.0330.08320.27
7.0.20.0300.07320.15
7.0.10.0200.04720.12
7.0.00.0100.04020.09
5.6.280.0000.07720.81
5.6.210.0070.08320.56
5.6.200.0030.09018.16
5.6.190.0170.07720.67
5.6.180.0300.05020.49
5.6.170.0300.09020.56
5.6.160.0030.07720.56
5.6.150.0000.04318.15
5.6.140.0030.06018.15
5.6.130.0100.08018.11
5.6.120.0130.03721.14
5.6.110.0000.05321.15
5.6.100.0000.06321.03
5.6.90.0130.06021.11
5.6.80.0130.07020.49
5.6.70.0300.07320.51
5.5.350.0070.08720.29
5.5.340.0130.07018.07
5.5.330.0230.03320.41
5.5.320.0070.08020.38
5.5.310.0300.07020.51
5.5.300.0100.07017.91
5.5.290.0030.07718.04
5.5.280.0130.06720.84
5.5.270.0100.08020.93
5.5.260.0070.06320.73
5.5.250.0200.06020.66
5.5.240.0100.06020.36
5.4.450.0400.06319.39
5.4.440.1030.05319.47
5.4.430.0700.06019.47
5.4.420.0970.05319.39
5.4.410.0670.05319.36
5.4.400.0370.05018.76
5.4.390.0330.05718.76
5.4.380.0270.05718.53
5.4.370.0270.06318.72
5.4.360.0330.05718.64
5.4.350.0430.04718.79
5.4.340.0300.05718.60
5.4.320.0500.06318.74
5.4.310.0230.06018.46
5.4.300.0300.05318.76
5.4.290.0370.04718.56
5.4.280.0300.05318.58
5.4.270.0270.05318.77
5.4.260.0230.06018.80
5.4.250.0300.05018.73
5.4.240.0330.04718.55
5.4.230.0270.05718.75
5.4.220.0370.05018.68
5.4.210.0230.05718.84
5.4.200.0230.05316.70
5.4.190.0300.05318.55
5.4.180.0230.06018.54
5.4.170.0300.05318.54
5.4.160.0270.05718.79
5.4.150.0330.04718.50
5.4.140.0270.05316.29
5.4.130.0300.04716.30
5.4.120.0270.05016.26
5.4.110.0330.04716.46
5.4.100.0400.04316.27
5.4.90.0370.04016.25
5.4.80.0200.06016.25
5.4.70.0230.05716.34
5.4.60.0300.04716.27
5.4.50.0230.05316.26
5.4.40.0270.05316.25
5.4.30.0270.05016.40
5.4.20.0230.05316.23
5.4.10.0270.05716.22
5.4.00.0300.07315.89
5.3.290.0330.05314.68
5.3.280.0270.05314.70
5.3.270.0230.06014.70
5.3.260.0270.05314.71
5.3.250.0270.05314.63
5.3.240.0330.04714.71
5.3.230.0330.05714.63
5.3.220.0300.05314.73
5.3.210.0330.05014.62
5.3.200.0330.05714.61
5.3.190.0270.05314.59
5.3.180.0300.05714.75
5.3.170.0400.06314.60
5.3.160.0270.05714.73
5.3.150.0300.05014.79
5.3.140.0300.05014.69
5.3.130.0370.05014.65
5.3.120.0330.05014.75
5.3.110.0270.05714.59
5.3.100.0270.05314.09
5.3.90.0470.06014.15
5.3.80.0330.07314.12
5.3.70.0330.07014.12
5.3.60.0300.05014.05
5.3.50.0370.05013.99
5.3.40.0230.06014.15
5.3.30.0370.05713.91
5.3.20.0530.04713.91
5.3.10.0230.05313.71
5.3.00.0270.05713.74
5.2.170.0270.04711.20
5.2.160.0270.04311.19
5.2.150.0300.03711.36
5.2.140.0230.04711.18
5.2.130.0370.03011.13
5.2.120.0170.04711.16
5.2.110.0170.04311.09
5.2.100.0200.04311.32
5.2.90.0170.04711.13
5.2.80.0400.05711.08
5.2.70.0300.05711.09
5.2.60.0170.05311.07
5.2.50.0270.04011.13
5.2.40.0300.03010.98
5.2.30.0230.05311.17
5.2.20.0330.03710.97
5.2.10.0170.05010.89
5.2.00.0270.03710.70
5.1.60.0230.03310.02
5.1.50.0200.03710.14
5.1.40.0170.0409.96
5.1.30.0100.04710.43
5.1.20.0200.03710.38
5.1.10.0200.03710.09
5.1.00.0170.04010.19
5.0.50.0130.0308.66
5.0.40.0170.0208.41
5.0.30.0100.0478.35
5.0.20.0100.0308.34
5.0.10.0100.0278.19
5.0.00.0130.0408.26
4.4.90.0070.0275.90
4.4.80.0030.0275.88
4.4.70.0100.0235.91
4.4.60.0130.0235.89
4.4.50.0130.0236.02
4.4.40.0030.0405.91
4.4.30.0170.0205.91
4.4.20.0100.0305.96
4.4.10.0070.0335.95
4.4.00.0170.0375.93
4.3.110.0230.0205.80
4.3.100.0170.0205.87
4.3.90.0130.0235.88
4.3.80.0170.0405.92
4.3.70.0170.0235.83
4.3.60.0130.0305.79
4.3.50.0100.0305.82
4.3.40.0130.0435.83
4.3.30.0100.0234.87
4.3.20.0030.0234.87
4.3.10.0100.0204.87
4.3.00.0170.0207.60

preferences:
42.5 ms | 400 KiB | 5 Q