3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = "ab"; $s1 = "cAbfabe"; $s2 = $s1; do { $s2 = stristr($s2,$s); echo "s2: $s2\n"; $s3 = substr($s2,0,count($s)+1); echo "s3: $s3\n"; $s2 = substr($s2,count($s)+1); echo "s2: $s2\n"; echo "=======\n"; } while ($s2 != 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)
8.3.60.0110.00316.63
8.3.50.0250.00722.04
8.3.40.0140.00418.64
8.3.30.0130.00719.17
8.3.20.0050.00320.33
8.3.10.0000.00723.66
8.3.00.0000.00819.26
8.2.180.0110.01118.09
8.2.170.0110.00722.96
8.2.160.0070.00720.35
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0030.00726.16
8.2.120.0000.00820.79
8.2.110.0090.00020.89
8.2.100.0110.00018.00
8.2.90.0030.00619.02
8.2.80.0080.00017.97
8.2.70.0000.00817.63
8.2.60.0040.00417.80
8.2.50.0050.00318.10
8.2.40.0070.00020.59
8.2.30.0000.00719.30
8.2.20.0000.00717.75
8.2.10.0000.00818.04
8.2.00.0070.00417.68
8.1.280.0070.01025.92
8.1.270.0060.00322.03
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0000.01022.75
8.1.230.0040.00720.39
8.1.220.0040.00417.76
8.1.210.0050.00318.77
8.1.200.0090.00017.23
8.1.190.0030.00617.23
8.1.180.0070.00018.10
8.1.170.0030.00618.71
8.1.160.0080.00018.84
8.1.150.0090.00020.14
8.1.140.0000.00817.45
8.1.130.0070.00017.74
8.1.120.0000.00717.48
8.1.110.0080.00017.45
8.1.100.0040.00417.45
8.1.90.0000.00717.41
8.1.80.0000.00717.49
8.1.70.0000.00717.36
8.1.60.0030.00517.46
8.1.50.0040.00417.52
8.1.40.0000.00917.53
8.1.30.0040.00417.58
8.1.20.0000.00817.64
8.1.10.0000.00717.50
8.1.00.0000.00817.41
8.0.300.0040.00418.77
8.0.290.0030.00516.75
8.0.280.0030.00318.49
8.0.270.0000.00717.27
8.0.260.0060.00017.17
8.0.250.0030.00317.03
8.0.240.0060.00316.91
8.0.230.0000.00816.99
8.0.220.0000.00716.86
8.0.210.0070.00016.97
8.0.200.0040.00416.91
8.0.190.0000.00716.97
8.0.180.0040.00416.88
8.0.170.0040.00417.00
8.0.160.0000.00716.91
8.0.150.0000.00716.95
8.0.140.0000.00716.81
8.0.130.0030.00313.45
8.0.120.0040.00416.86
8.0.110.0000.00716.83
8.0.100.0050.00216.82
8.0.90.0040.00416.84
8.0.80.0080.00816.95
8.0.70.0050.00216.88
8.0.60.0030.00516.91
8.0.50.0030.00516.96
8.0.30.0120.00716.84
8.0.20.0090.00917.40
8.0.10.0000.00817.01
8.0.00.0080.01016.90
7.4.330.0020.00215.00
7.4.320.0030.00316.63
7.4.300.0000.00616.40
7.4.290.0000.00716.50
7.4.280.0040.00416.59
7.4.270.0040.00416.50
7.4.260.0000.00616.45
7.4.250.0030.00316.42
7.4.240.0060.00216.52
7.4.230.0040.00416.51
7.4.220.0150.00316.70
7.4.210.0030.01216.48
7.4.200.0030.00316.63
7.4.190.0050.00316.40
7.4.160.0120.00416.38
7.4.150.0060.01117.40
7.4.140.0080.00817.86
7.4.130.0120.00516.44
7.4.120.0100.00816.54
7.4.110.0210.00316.46
7.4.100.0070.01016.60
7.4.90.0070.01016.47
7.4.80.0090.01319.39
7.4.70.0070.01416.50
7.4.60.0030.01616.46
7.4.50.0030.00516.59
7.4.40.0060.01322.77
7.4.30.0040.01516.43
7.4.00.0080.00415.05
7.3.330.0000.00513.15
7.3.320.0000.00513.38
7.3.310.0050.00216.21
7.3.300.0030.00316.30
7.3.290.0070.00716.29
7.3.280.0050.01316.32
7.3.270.0110.00617.40
7.3.260.0100.00716.48
7.3.250.0070.01216.48
7.3.240.0180.00716.44
7.3.230.0110.00616.39
7.3.210.0070.01316.47
7.3.200.0080.01419.39
7.3.190.0100.01016.38
7.3.180.0080.00816.33
7.3.170.0090.00616.34
7.3.160.0060.00916.34
7.3.120.0130.00314.98
7.3.10.0000.01216.46
7.3.00.0080.00416.57
7.2.330.0090.00916.73
7.2.320.0070.01316.76
7.2.310.0180.00616.47
7.2.300.0110.00516.65
7.2.290.0070.01016.61
7.2.130.0030.01016.61
7.2.120.0060.00916.93
7.2.110.0060.00916.79
7.2.100.0040.01416.85
7.2.90.0210.00616.86
7.2.80.0130.00316.78
7.2.70.0110.00916.85
7.2.60.0080.00616.91
7.2.50.0100.00516.69
7.2.40.0100.00716.99
7.2.30.0150.00016.63
7.2.20.0070.00716.79
7.2.10.0070.01016.70
7.2.00.0030.00918.23
7.1.250.0090.00415.91
7.1.200.0040.00815.74
7.1.100.0040.00718.07
7.1.70.0100.00617.01
7.1.60.0170.00719.33
7.1.50.0150.00616.84
7.1.00.0070.07022.50
7.0.200.0150.00615.03
7.0.140.0100.06722.16
7.0.60.0030.04319.94
7.0.50.0070.05017.82
7.0.40.0030.07320.27
7.0.30.0230.08020.01
7.0.20.0200.06720.00
7.0.10.0000.04720.00
7.0.00.0030.05320.12
5.6.280.0030.07321.02
5.6.210.0100.03720.64
5.6.200.0070.08318.08
5.6.190.0070.09020.64
5.6.180.0230.03320.57
5.6.170.0270.08020.33
5.6.160.0000.06020.54
5.6.150.0130.07318.16
5.6.140.0070.08018.18
5.6.130.0030.04318.21
5.6.120.0100.04720.96
5.6.110.0130.07721.11
5.6.100.0070.06721.13
5.6.90.0100.08021.12
5.6.80.0100.08020.43
5.6.70.4470.04320.39
5.5.350.0330.07020.30
5.5.340.0170.07017.98
5.5.330.0030.08320.36
5.5.320.0200.04020.32
5.5.310.0330.07020.20
5.5.300.0100.06717.96
5.5.290.0130.08017.99
5.5.280.0130.07720.87
5.5.270.0070.07720.87
5.5.260.0030.06720.85
5.5.250.0100.07720.57
5.5.240.4130.03720.25
5.4.450.0200.07019.65
5.4.440.0100.05719.46
5.4.430.0230.05319.60
5.4.420.0170.05719.31
5.4.410.0100.06319.11
5.4.400.0130.06719.15
5.4.390.0030.06319.16
5.4.380.0330.06718.46
5.4.370.0270.05318.68
5.4.360.0300.05718.50
5.4.350.0230.06018.50
5.4.340.0400.05018.72
5.4.320.0060.03712.45
5.4.310.0120.04212.45
5.4.300.0060.04012.46
5.4.290.0080.04612.45
5.4.280.0130.03912.35
5.4.270.0050.04712.35
5.4.260.0050.03712.35
5.4.250.0100.04212.35
5.4.240.0080.04612.35
5.4.230.0070.04412.34
5.4.220.0070.04412.34
5.4.210.0080.03712.34
5.4.200.0110.04412.34
5.4.190.0090.03612.34
5.4.180.0080.03412.34
5.4.170.0150.04212.34
5.4.160.0140.04412.33
5.4.150.0130.04612.32
5.4.140.0140.04412.01
5.4.130.0130.04512.00
5.4.120.0130.04311.96
5.4.110.0160.04111.95
5.4.100.0180.04111.95
5.4.90.0110.04711.95
5.4.80.0260.09211.95
5.4.70.0130.04711.95
5.4.60.0110.04711.95
5.4.50.0130.04311.95
5.4.40.0150.04211.94
5.4.30.0170.04111.94
5.4.20.0170.03911.93
5.4.10.0180.03811.93
5.4.00.0150.04011.42
5.3.290.0090.03812.80
5.3.280.0080.03512.71
5.3.270.0180.04212.72
5.3.260.0190.04112.72
5.3.250.0180.04112.72
5.3.240.0160.04412.71
5.3.230.0250.06712.71
5.3.220.0180.04112.68
5.3.210.0150.04612.68
5.3.200.0220.03712.68
5.3.190.0420.08312.68
5.3.180.0160.04412.68
5.3.170.0230.03712.67
5.3.160.0180.04212.68
5.3.150.0180.04112.68
5.3.140.0140.04512.66
5.3.130.0200.04112.66
5.3.120.0130.04712.66
5.3.110.0140.04612.66
5.3.100.0150.04512.12
5.3.90.0150.04312.08
5.3.80.0170.04312.07
5.3.70.0140.04812.07
5.3.60.0150.04812.06
5.3.50.0190.04012.00
5.3.40.0350.08512.00
5.3.30.0160.04111.95
5.3.20.0130.04611.72
5.3.10.0120.04411.69
5.3.00.0220.03411.67
5.2.170.0200.0579.18
5.2.160.0090.0409.18
5.2.150.0150.0339.18
5.2.140.0120.0359.18
5.2.130.0120.0349.14
5.2.120.0150.0319.13
5.2.110.0130.0349.14
5.2.100.0140.0339.14
5.2.90.0100.0369.14
5.2.80.0160.0319.13
5.2.70.0110.0359.12
5.2.60.0130.0359.09
5.2.50.0140.0339.05
5.2.40.0130.0339.02
5.2.30.0140.0329.00
5.2.20.0150.0339.00
5.2.10.0100.0358.92
5.2.00.0140.0318.78
5.1.60.0110.0288.07
5.1.50.0090.0318.07
5.1.40.0080.0318.05
5.1.30.0140.0588.39
5.1.20.0100.0328.43
5.1.10.0090.0338.15
5.1.00.0100.0318.14
5.0.50.0110.0236.63
5.0.40.0100.0216.48
5.0.30.0060.0386.29
5.0.20.0070.0246.27
5.0.10.0110.0206.24
5.0.00.0090.0356.23
4.4.90.0100.0154.78
4.4.80.0110.0164.75
4.4.70.0110.0154.75
4.4.60.0090.0184.75
4.4.50.0080.0164.77
4.4.40.0080.0274.71
4.4.30.0060.0194.76
4.4.20.0070.0184.84
4.4.10.0110.0144.85
4.4.00.0110.0554.75
4.3.110.0060.0184.67
4.3.100.0070.0174.67
4.3.90.0060.0184.63
4.3.80.0050.0294.58
4.3.70.0050.0194.63
4.3.60.0060.0184.63
4.3.50.0090.0154.63
4.3.40.0070.0274.53
4.3.30.0050.0213.30
4.3.20.0040.0193.29
4.3.10.0040.0193.25
4.3.00.0070.0178.88

preferences:
47.74 ms | 401 KiB | 5 Q