3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($str, $substr) { return strpos(substr($str,1), $substr) === 0; } function test2($str, $substr) { return strpos($str, $substr) > 0; } $str = 'hello'; $sub = 'he'; var_dump( test($str, $sub), test2($str, $sub) ); ?>

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)
8.3.60.0040.01116.50
8.3.50.0110.01322.82
8.3.40.0120.00318.54
8.3.30.0070.00719.09
8.3.20.0070.00020.39
8.3.10.0080.00023.48
8.3.00.0030.00519.25
8.2.180.0040.01118.25
8.2.170.0140.00022.96
8.2.160.0100.00320.38
8.2.150.0050.00324.18
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0070.00021.16
8.2.110.0100.00021.24
8.2.100.0090.00317.91
8.2.90.0000.00819.24
8.2.80.0000.00817.97
8.2.70.0050.00517.46
8.2.60.0080.00017.80
8.2.50.0000.00918.10
8.2.40.0030.00518.22
8.2.30.0070.00018.00
8.2.20.0020.00517.61
8.2.10.0030.00517.94
8.2.00.0000.00817.78
8.1.280.0110.00425.92
8.1.270.0070.00023.84
8.1.260.0070.00026.35
8.1.250.0030.00328.09
8.1.240.0170.00022.09
8.1.230.0080.00417.83
8.1.220.0070.00017.78
8.1.210.0030.00618.77
8.1.200.0040.00417.35
8.1.190.0060.00317.23
8.1.180.0000.00818.10
8.1.170.0080.00018.59
8.1.160.0040.00421.96
8.1.150.0000.00718.91
8.1.140.0070.00017.36
8.1.130.0030.00317.81
8.1.120.0040.00417.50
8.1.110.0050.00317.44
8.1.100.0000.00717.47
8.1.90.0080.00017.37
8.1.80.0070.00317.47
8.1.70.0000.00717.39
8.1.60.0050.00317.49
8.1.50.0040.00417.59
8.1.40.0040.00417.39
8.1.30.0040.00417.45
8.1.20.0050.00217.63
8.1.10.0040.00417.40
8.1.00.0000.00717.34
8.0.300.0070.00018.77
8.0.290.0000.00816.63
8.0.280.0070.00018.45
8.0.270.0030.00317.32
8.0.260.0030.00317.29
8.0.250.0030.00317.00
8.0.240.0030.00316.92
8.0.230.0030.00316.89
8.0.220.0070.00016.91
8.0.210.0070.00016.96
8.0.200.0030.00316.95
8.0.190.0070.00016.94
8.0.180.0030.00316.96
8.0.170.0000.00816.88
8.0.160.0080.00016.94
8.0.150.0050.00316.77
8.0.140.0030.00616.79
8.0.130.0030.00313.27
8.0.120.0020.00516.87
8.0.110.0020.00516.92
8.0.100.0000.00716.93
8.0.90.0000.00716.76
8.0.80.0140.00616.95
8.0.70.0050.00316.90
8.0.60.0040.00416.91
8.0.50.0040.00416.86
8.0.30.0110.00916.82
8.0.20.0100.00917.40
8.0.10.0000.00717.05
8.0.00.0080.00916.89
7.4.330.0000.00515.15
7.4.320.0000.00616.65
7.4.300.0030.00316.55
7.4.290.0040.00416.53
7.4.280.0040.00416.50
7.4.270.0030.00316.42
7.4.260.0000.00716.50
7.4.250.0000.00716.49
7.4.240.0020.00516.57
7.4.230.0000.00716.34
7.4.220.0090.00916.54
7.4.210.0030.01616.38
7.4.200.0000.00716.67
7.4.160.0060.01516.45
7.4.150.0160.01017.40
7.4.140.0100.00717.86
7.4.130.0090.00916.44
7.4.120.0050.01316.50
7.4.110.0130.00716.68
7.4.100.0100.00716.57
7.4.90.0130.00316.56
7.4.80.0060.01219.39
7.4.70.0080.00816.48
7.4.60.0100.00716.53
7.4.50.0030.00316.63
7.4.40.0090.01516.54
7.4.30.0080.00816.75
7.4.00.0070.00814.92
7.3.330.0060.00013.17
7.3.320.0030.00213.11
7.3.310.0030.00316.28
7.3.300.0060.00016.10
7.3.290.0090.00616.23
7.3.280.0080.00916.22
7.3.270.0160.00917.40
7.3.260.0090.00916.38
7.3.250.0130.00716.53
7.3.240.0070.01016.29
7.3.230.0030.01316.39
7.3.210.0070.01316.39
7.3.200.0140.00419.39
7.3.190.0090.01216.24
7.3.180.0140.00416.59
7.3.170.0070.01016.35
7.3.160.0080.00816.55
7.3.120.0100.00714.81
7.3.110.0070.00814.85
7.3.100.0080.00615.01
7.3.90.0110.00014.89
7.3.80.0020.01315.02
7.3.70.0080.00714.60
7.3.60.0030.01214.77
7.3.50.0070.00714.79
7.3.40.0040.00814.83
7.3.30.0060.00914.67
7.3.20.0040.00916.49
7.3.10.0050.01016.67
7.3.00.0090.00516.67
7.2.330.0110.00816.61
7.2.320.0110.00616.72
7.2.310.0070.01116.64
7.2.300.0090.01316.32
7.2.290.0110.00516.74
7.2.250.0060.01315.12
7.2.240.0130.00514.82
7.2.230.0050.00614.89
7.2.220.0030.01014.83
7.2.210.0030.00914.78
7.2.200.0070.00714.94
7.2.190.0060.00514.78
7.2.180.0070.00715.08
7.2.170.0070.00814.86
7.2.160.0100.00314.97
7.2.150.0000.01516.90
7.2.140.0090.00616.82
7.2.130.0060.00916.95
7.2.120.0080.00616.91
7.2.110.0070.01116.52
7.2.100.0070.00216.84
7.2.90.0080.00816.75
7.2.80.0040.01116.84
7.2.70.0040.01116.81
7.2.60.0120.00417.03
7.2.50.0000.01616.91
7.2.40.0030.00916.91
7.2.30.0100.00716.60
7.2.20.0060.01016.86
7.2.10.0040.01116.70
7.2.00.0040.01018.06
7.1.330.0090.00415.70
7.1.320.0070.00415.58
7.1.310.0050.00515.95
7.1.300.0070.00815.67
7.1.290.0020.01115.72
7.1.280.0060.00615.75
7.1.270.0030.01015.61
7.1.260.0040.00915.69
7.1.250.0030.01015.78
7.1.100.0090.00617.84
7.1.70.0030.01317.25
7.1.60.0130.01019.46
7.1.50.0040.01817.00
7.1.00.0000.07722.32
7.0.200.0000.01016.41
7.0.140.0070.07022.11
7.0.60.0030.04019.86
7.0.50.0070.07017.85
7.0.40.0030.04320.11
7.0.30.0400.05720.09
7.0.20.0330.04720.12
7.0.10.0100.07720.25
7.0.00.0030.04720.23
5.6.280.0130.06320.99
5.6.210.0030.04720.56
5.6.200.0070.05018.19
5.6.190.0100.04020.64
5.6.180.0370.07320.41
5.6.170.0270.08020.50
5.6.160.0070.04020.71
5.6.150.0070.05018.28
5.6.140.0030.03718.28
5.6.130.0030.05018.19
5.6.120.0030.05021.02
5.6.110.0030.08320.97
5.6.100.0030.04321.01
5.6.90.0030.06721.11
5.6.80.0030.07320.39
5.5.350.0270.07720.50
5.5.340.0030.04017.95
5.5.330.0130.03320.21
5.5.320.0200.05020.24
5.5.310.0270.08320.34
5.5.300.0070.04717.98
5.5.290.0030.04017.98
5.5.280.0070.08320.88
5.5.270.0130.03720.67
5.5.260.0030.07720.68
5.5.250.0000.04320.79
5.5.240.0130.06720.29
5.4.450.0300.05019.53
5.4.440.0330.03319.46
5.4.430.0300.03719.41
5.4.420.0200.03719.30
5.4.410.0300.04019.27
5.4.400.0530.03018.85
5.4.390.0230.04319.27
5.4.380.0370.04318.76
5.4.370.0330.05318.79
5.4.360.0400.05718.47
5.4.350.0230.05718.73
5.4.340.0370.05018.77
5.4.320.0060.03812.51
5.4.310.0080.05212.50
5.4.300.0070.03512.50
5.4.290.0120.03212.50
5.4.280.0070.03412.40
5.4.270.0050.03712.40
5.4.260.0060.03812.40
5.4.250.0060.03712.40
5.4.240.0060.03612.39
5.4.230.0070.03712.39
5.4.220.0090.03312.39
5.4.210.0050.03712.39
5.4.200.0050.03912.39
5.4.190.0040.03912.39
5.4.180.0060.03612.38
5.4.170.0050.04612.39
5.4.160.0060.03512.39
5.4.150.0060.03512.38
5.4.140.0090.03412.07
5.4.130.0070.03312.06
5.4.120.0070.03412.02
5.4.110.0050.03512.02
5.4.100.0050.03612.01
5.4.90.0040.03812.01
5.4.80.0060.03612.01
5.4.70.0050.03512.01
5.4.60.0060.03412.01
5.4.50.0060.03512.01
5.4.40.0040.03712.00
5.4.30.0050.03611.99
5.4.20.0050.03712.00
5.4.10.0090.03311.99
5.4.00.0090.03311.48
5.3.290.0050.04012.80
5.3.280.0040.04012.71
5.3.270.0070.03812.73
5.3.260.0030.04212.72
5.3.250.0080.03812.72
5.3.240.0050.03812.72
5.3.230.0030.04112.71
5.3.220.0080.03512.68
5.3.210.0040.04112.68
5.3.200.0060.03712.68
5.3.190.0050.05212.67
5.3.180.0060.03612.67
5.3.170.0070.03412.67
5.3.160.0040.03812.67
5.3.150.0040.03912.68
5.3.140.0060.03612.66
5.3.130.0060.03912.66
5.3.120.0140.04012.65
5.3.110.0060.04012.66
5.3.100.0080.03812.12
5.3.90.0060.03512.10
5.3.80.0010.04412.10
5.3.70.0050.03612.10
5.3.60.0060.04112.08
5.3.50.0060.03812.03
5.3.40.0110.02912.03
5.3.30.0050.03411.98
5.3.20.0070.03311.77
5.3.10.0040.03711.73
5.3.00.0070.03511.72
5.2.170.0060.0299.22
5.2.160.0070.0269.22
5.2.150.0010.0339.22
5.2.140.0070.0299.22
5.2.130.0040.0309.18
5.2.120.0030.0309.18
5.2.110.0040.0309.19
5.2.100.0040.0299.18
5.2.90.0030.0309.18
5.2.80.0030.0329.17
5.2.70.0020.0339.18
5.2.60.0050.0309.13
5.2.50.0060.0299.11
5.2.40.0040.0299.08
5.2.30.0020.0329.05
5.2.20.0050.0289.04
5.2.10.0060.0268.94
5.2.00.0040.0308.80
5.1.60.0020.0268.09
5.1.50.0030.0268.09
5.1.40.0040.0248.06
5.1.30.0050.0248.41
5.1.20.0040.0268.44
5.1.10.0050.0248.17
5.1.00.0020.0278.17
5.0.50.0030.0206.64
5.0.40.0020.0206.50
5.0.30.0040.0306.32
5.0.20.0050.0176.28
5.0.10.0040.0196.26
5.0.00.0030.0306.25
4.4.90.0020.0164.77
4.4.80.0040.0134.75
4.4.70.0050.0134.75
4.4.60.0030.0144.76
4.4.50.0030.0204.77
4.4.40.0040.0274.71
4.4.30.0070.0204.75
4.4.20.0020.0174.84
4.4.10.0010.0174.85
4.4.00.0030.0244.76
4.3.110.0040.0214.67
4.3.100.0060.0184.67
4.3.90.0020.0224.64
4.3.80.0040.0304.59
4.3.70.0020.0174.63
4.3.60.0000.0204.63
4.3.50.0010.0174.63
4.3.40.0040.0224.54
4.3.30.0030.0143.31
4.3.20.0010.0163.28
4.3.10.0010.0163.24
4.3.00.0000.01318.23

preferences:
42.01 ms | 401 KiB | 5 Q