3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '123456789'; $l = count($a)-4; echo substr_replace($a, str_repeat('*', $l), 0, $l);

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)
8.3.60.0000.01516.61
8.3.50.0230.00921.02
8.3.40.0110.01118.86
8.3.30.0070.01518.54
8.3.20.0070.00020.23
8.3.10.0040.00421.65
8.3.00.0050.00323.71
8.2.180.0100.00716.88
8.2.170.0120.00922.96
8.2.160.0070.01020.39
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00419.82
8.2.120.0050.00326.35
8.2.110.0060.00320.40
8.2.100.0040.00719.45
8.2.90.0040.00417.63
8.2.80.0080.00018.82
8.2.70.0050.00317.75
8.2.60.0040.00417.63
8.2.50.0080.00017.80
8.2.40.0040.00419.25
8.2.30.0040.00419.53
8.2.20.0040.00417.79
8.2.10.0040.00418.09
8.2.00.0000.00718.11
8.1.280.0110.00725.92
8.1.270.0060.00323.92
8.1.260.0070.00028.09
8.1.250.0040.00428.09
8.1.240.0040.00720.47
8.1.230.0080.00422.11
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0040.00417.35
8.1.190.0080.00017.48
8.1.180.0000.00818.10
8.1.170.0050.00317.62
8.1.160.0050.00220.72
8.1.150.0040.00318.92
8.1.140.0000.00819.61
8.1.130.0000.00717.72
8.1.120.0040.00417.35
8.1.110.0050.00317.45
8.1.100.0080.00017.44
8.1.90.0040.00417.35
8.1.80.0000.00717.36
8.1.70.0040.00417.38
8.1.60.0040.00417.55
8.1.50.0040.00417.52
8.1.40.0040.00417.53
8.1.30.0030.00517.53
8.1.20.0040.00417.52
8.1.10.0040.00417.46
8.1.00.0030.00617.50
8.0.300.0070.00018.77
8.0.290.0090.00016.75
8.0.280.0000.00718.24
8.0.270.0000.00717.17
8.0.260.0030.00317.17
8.0.250.0030.00316.95
8.0.240.0050.00216.98
8.0.230.0000.00716.84
8.0.220.0070.00016.88
8.0.210.0030.00516.86
8.0.200.0070.00016.97
8.0.190.0030.00616.85
8.0.180.0030.00316.94
8.0.170.0040.00416.92
8.0.160.0030.00416.98
8.0.150.0020.00516.85
8.0.140.0080.00016.84
8.0.130.0050.00013.32
8.0.120.0000.00916.73
8.0.110.0040.00416.88
8.0.100.0070.00016.81
8.0.90.0000.00716.82
8.0.80.0120.00316.88
8.0.70.0040.00416.78
8.0.60.0040.00416.91
8.0.50.0040.00416.95
8.0.30.0110.00717.04
8.0.20.0100.00917.40
8.0.10.0040.00417.09
8.0.00.0140.00616.72
7.4.330.0060.00015.08
7.4.320.0000.00616.61
7.4.300.0000.00716.55
7.4.290.0040.00416.50
7.4.280.0030.00616.46
7.4.270.0000.00716.51
7.4.260.0070.00316.46
7.4.250.0040.00416.51
7.4.240.0030.00416.48
7.4.230.0000.00716.39
7.4.220.0120.00616.43
7.4.210.0060.00916.56
7.4.200.0000.00716.39
7.4.160.0000.01516.40
7.4.150.0150.00317.40
7.4.140.0080.01317.86
7.4.130.0070.01416.36
7.4.120.0060.01016.51
7.4.110.0120.00416.64
7.4.100.0170.00316.46
7.4.90.0090.00916.47
7.4.80.0120.00919.39
7.4.70.0140.00316.43
7.4.60.0080.00816.39
7.4.50.0060.00616.20
7.4.40.0130.00416.48
7.4.30.0170.00316.44
7.4.00.0070.00714.80
7.3.330.0000.00613.15
7.3.320.0000.00513.15
7.3.310.0030.00316.38
7.3.300.0060.00016.33
7.3.290.0000.00716.11
7.3.280.0090.00816.30
7.3.270.0080.01217.40
7.3.260.0180.00016.49
7.3.240.0080.01316.48
7.3.230.0140.00316.39
7.3.210.0030.01316.38
7.3.200.0030.01919.39
7.3.190.0110.00616.27
7.3.180.0000.01616.30
7.3.170.0120.00316.30
7.3.160.0130.01016.36
7.2.330.0140.00516.37
7.2.320.0130.00416.61
7.2.310.0090.01216.74
7.2.300.0030.01316.77
7.2.290.0110.01116.46
7.2.60.0030.01316.70
7.2.00.0000.01119.05
7.1.200.0110.00315.42
7.1.100.0040.01417.98
7.1.70.0000.00717.10
7.1.60.0040.00819.30
7.1.50.0030.00816.84
7.1.00.0030.07722.50
7.0.200.1640.01014.66
7.0.60.0200.06321.90
7.0.50.0070.05317.76
7.0.40.0170.08319.98
7.0.30.0470.03720.14
7.0.20.0400.07720.18
7.0.10.0170.06320.13
7.0.00.0070.07720.13
5.6.280.0000.06320.81
5.6.210.0100.08020.45
5.6.200.0070.07018.13
5.6.190.0030.05320.64
5.6.180.0500.06720.67
5.6.170.0230.08020.49
5.6.160.0070.05320.50
5.6.150.0070.05718.21
5.6.140.0170.03018.11
5.6.130.0130.03318.18
5.6.120.0100.07720.99
5.6.110.0070.04021.13
5.6.100.0030.06321.12
5.6.90.0170.07720.87
5.6.80.0030.05320.47
5.5.350.0100.04020.32
5.5.340.0030.04018.00
5.5.330.0030.04020.29
5.5.320.0430.06020.32
5.5.310.0200.07320.25
5.5.300.0100.03717.98
5.5.290.0100.08317.91
5.5.280.0100.06320.96
5.5.270.0030.04320.79
5.5.260.0100.06320.94
5.5.250.0230.07020.58
5.5.240.0100.05020.22

preferences:
53.41 ms | 401 KiB | 5 Q