3v4l.org

run code in 300+ PHP versions simultaneously
<?php $number = '4XXXXXXX'; var_dump(substr($number, 0, 1)); var_dump(strpos( substr($number, 0, 1), '123467CF' ));

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)
8.3.60.0150.00018.43
8.3.50.0140.00017.96
8.3.40.0170.00318.67
8.3.30.0120.00318.49
8.3.20.0000.00819.02
8.3.10.0080.00020.87
8.3.00.0040.00419.33
8.2.180.0110.01116.63
8.2.170.0070.00722.96
8.2.160.0070.00718.86
8.2.150.0050.00224.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00419.66
8.2.110.0060.00319.30
8.2.100.0040.00817.59
8.2.90.0040.00417.63
8.2.80.0000.00918.72
8.2.70.0030.00617.80
8.2.60.0080.00017.80
8.2.50.0050.00518.10
8.2.40.0000.00820.77
8.2.30.0050.00319.27
8.2.20.0000.00818.05
8.2.10.0030.00517.98
8.2.00.0000.00721.22
8.1.280.0180.00325.92
8.1.270.0080.00023.58
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0100.00023.89
8.1.230.0090.00320.77
8.1.220.0030.00618.52
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0070.00317.23
8.1.180.0060.00318.10
8.1.170.0070.00418.49
8.1.160.0000.00818.75
8.1.150.0040.00418.73
8.1.140.0040.00417.64
8.1.130.0000.00718.90
8.1.120.0030.00617.31
8.1.110.0040.00417.30
8.1.100.0050.00317.28
8.1.90.0030.00717.29
8.1.80.0030.00717.30
8.1.70.0000.00917.38
8.1.60.0060.00317.53
8.1.50.0030.00617.51
8.1.40.0000.00817.34
8.1.30.0030.00517.41
8.1.20.0070.00017.54
8.1.10.0040.00417.35
8.1.00.0050.00317.36
8.0.300.0050.00318.77
8.0.290.0000.00716.58
8.0.280.0030.00318.30
8.0.270.0070.00017.17
8.0.260.0060.00317.10
8.0.250.0030.00316.79
8.0.240.0030.00316.84
8.0.230.0030.00616.78
8.0.220.0000.00716.71
8.0.210.0030.00316.73
8.0.200.0000.00716.77
8.0.190.0000.00716.92
8.0.180.0080.00016.86
8.0.170.0060.00316.83
8.0.160.0030.00516.79
8.0.150.0030.00516.66
8.0.140.0000.01016.71
8.0.130.0000.00513.29
8.0.120.0000.00716.76
8.0.110.0030.00616.66
8.0.100.0000.00716.70
8.0.90.0000.00716.64
8.0.80.0130.00516.78
8.0.70.0000.00816.78
8.0.60.0040.00416.64
8.0.50.0040.00416.80
8.0.30.0100.00817.18
8.0.20.0110.00617.40
8.0.10.0050.00316.82
8.0.00.0090.01216.67
7.4.330.0000.00515.55
7.4.320.0000.00716.54
7.4.300.0030.00316.55
7.4.290.0000.00716.44
7.4.280.0040.00416.54
7.4.270.0000.00716.59
7.4.260.0030.00316.39
7.4.250.0040.00416.30
7.4.240.0030.00316.44
7.4.230.0000.00716.61
7.4.220.0030.00516.59
7.4.210.0100.00916.53
7.4.200.0030.00316.46
7.4.160.0060.01116.36
7.4.140.0070.01217.86
7.4.130.0070.01016.59
7.4.120.0140.00616.45
7.4.110.0060.01216.46
7.4.100.0070.01016.43
7.4.90.0110.01116.32
7.4.80.0080.00619.39
7.4.70.0110.01216.35
7.4.60.0030.01316.26
7.4.50.0030.00616.14
7.4.40.0070.01116.40
7.4.00.0070.01014.87
7.3.330.0000.00513.04
7.3.320.0030.00312.98
7.3.310.0040.00416.09
7.3.300.0000.00716.13
7.3.290.0040.00416.12
7.3.280.0100.00716.06
7.3.260.0090.00816.21
7.3.240.0110.00716.29
7.3.230.0090.00616.18
7.3.210.0110.01016.27
7.3.200.0080.00816.46
7.3.190.0100.01016.59
7.3.180.0060.00916.08
7.3.170.0090.00916.34
7.3.160.0130.00316.47
7.3.120.0110.00314.81
7.3.110.0030.01314.68
7.3.100.0070.00714.69
7.3.90.0070.00714.71
7.3.80.0040.01214.42
7.3.70.0040.01214.58
7.3.60.0110.00414.86
7.3.50.0110.00414.75
7.3.40.0040.00714.62
7.3.30.0030.00814.73
7.3.20.0060.00616.56
7.3.10.0130.00016.27
7.3.00.0040.00816.59
7.2.330.0120.00916.41
7.2.320.0080.00916.35
7.2.310.0100.01016.35
7.2.300.0120.01216.25
7.2.290.0070.01316.39
7.2.250.0080.01214.82
7.2.240.0100.01014.99
7.2.230.0000.01214.73
7.2.220.0040.00814.79
7.2.210.0110.00414.78
7.2.200.0070.00714.99
7.2.190.0030.01414.72
7.2.180.0000.00914.98
7.2.170.0040.01114.61
7.2.110.0130.01016.40
7.2.60.1890.00914.77
7.2.50.1810.01014.65
7.2.40.1920.01115.23
7.2.30.2500.01115.28
7.2.20.1840.01015.14
7.2.10.1910.01015.36
7.2.00.1930.00515.10
7.1.330.0060.00915.45
7.1.320.0030.00715.67
7.1.310.0080.00315.77
7.1.300.0070.01015.70
7.1.290.0070.00715.68
7.1.280.0060.01015.48
7.1.270.0090.00615.86
7.1.260.0000.01515.66
7.1.170.1800.00613.89
7.1.160.1800.00916.84
7.1.150.1750.01016.79
7.1.140.1970.01116.71
7.1.130.1740.01316.79
7.1.120.2080.01216.54
7.1.110.2180.01215.96
7.1.100.2080.01016.32
7.1.90.1930.01115.85
7.1.80.1880.00816.13
7.1.70.1750.00815.32
7.1.60.1910.01033.01
7.1.50.2100.01432.64
7.1.40.2110.01832.62
7.1.30.2230.01732.46
7.1.20.2050.01232.58
7.1.10.1800.01014.77
7.1.00.1720.01114.68

preferences:
33.38 ms | 400 KiB | 5 Q