3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($i=127;$i<256;$i++){ $data = "a".chr($i)."b"; $a=preg_replace("/[^-_a-z]/", "", $data); if($a!="ab") echo $data; } ?>

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)
8.3.60.0140.00016.75
8.3.50.0090.00917.55
8.3.40.0070.01018.84
8.3.30.0090.00918.95
8.3.20.0080.00018.90
8.3.10.0040.00420.79
8.3.00.0080.00019.50
8.2.180.0120.00318.43
8.2.170.0120.00322.96
8.2.160.0040.01421.19
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.01426.16
8.2.120.0080.00019.48
8.2.110.0070.00420.92
8.2.100.0080.00417.71
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0040.00417.75
8.2.60.0000.00817.93
8.2.50.0030.00618.10
8.2.40.0050.00318.16
8.2.30.0050.00318.06
8.2.20.0060.00317.69
8.2.10.0040.00417.90
8.2.00.0000.00817.89
8.1.280.0110.00325.92
8.1.270.0040.00424.66
8.1.260.0030.00526.35
8.1.250.0000.00828.09
8.1.240.0120.00022.05
8.1.230.0040.00717.45
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0040.00417.35
8.1.190.0080.00017.35
8.1.180.0030.00618.10
8.1.170.0000.00818.68
8.1.160.0040.00418.83
8.1.150.0000.00718.79
8.1.140.0000.00717.64
8.1.130.0050.00317.86
8.1.120.0030.00317.65
8.1.110.0040.00417.65
8.1.100.0000.00717.58
8.1.90.0050.00317.50
8.1.80.0040.00417.63
8.1.70.0030.00317.52
8.1.60.0000.00817.70
8.1.50.0040.00417.63
8.1.40.0000.00817.68
8.1.30.0030.00517.79
8.1.20.0000.00717.79
8.1.10.0070.00017.63
8.1.00.0070.00317.48
8.0.300.0070.00018.77
8.0.290.0060.00316.75
8.0.280.0070.00018.46
8.0.270.0030.00317.25
8.0.260.0000.00816.87
8.0.250.0060.00317.11
8.0.240.0030.00617.07
8.0.230.0000.00716.96
8.0.220.0030.00316.98
8.0.210.0040.00417.02
8.0.200.0000.00717.09
8.0.190.0040.00417.11
8.0.180.0040.00416.96
8.0.170.0060.00316.92
8.0.160.0000.00817.10
8.0.150.0040.00417.04
8.0.140.0030.00516.96
8.0.130.0030.00313.45
8.0.120.0070.00016.90
8.0.110.0040.00416.95
8.0.100.0040.00317.09
8.0.90.0040.00416.95
8.0.80.0100.01017.04
8.0.70.0040.00417.03
8.0.60.0040.00416.95
8.0.50.0030.00516.80
8.0.30.0150.00317.36
8.0.20.0150.00317.20
8.0.10.0000.00717.21
8.0.00.0100.00817.00
7.4.330.0000.00513.20
7.4.320.0030.00316.71
7.4.300.0030.00316.61
7.4.290.0030.00316.73
7.4.280.0040.00416.70
7.4.270.0030.00316.81
7.4.260.0050.00013.34
7.4.250.0060.00316.84
7.4.240.0040.00316.69
7.4.230.0030.00316.87
7.4.220.0100.01016.81
7.4.210.0060.01016.80
7.4.200.0070.00016.91
7.4.190.0000.00716.69
7.4.160.0110.00716.89
7.4.150.0110.00616.56
7.4.140.0090.00816.70
7.4.130.0080.00916.73
7.4.120.0050.01216.86
7.4.110.0000.01616.63
7.4.100.0070.01016.57
7.4.90.0040.01616.54
7.4.80.0100.00719.39
7.4.70.0130.00316.78
7.4.60.0060.01016.69
7.4.50.0090.00216.44
7.4.40.0070.01016.49
7.4.30.0090.00616.80
7.4.00.0080.00515.28
7.3.330.0060.00013.32
7.3.320.0080.00013.15
7.3.310.0000.00716.25
7.3.300.0070.00016.43
7.3.290.0120.00316.46
7.3.280.0090.00916.38
7.3.270.0090.00916.69
7.3.260.0100.00716.99
7.3.250.0130.00616.54
7.3.240.0100.00616.66
7.3.230.0060.01016.42
7.3.210.0110.00716.52
7.3.200.0120.00816.62
7.3.190.0090.01216.71
7.3.180.0100.00716.75
7.3.170.0070.01016.46
7.3.160.0130.00316.30
7.3.120.0070.01014.89
7.3.10.0130.01316.56
7.3.00.0130.01016.75
7.2.330.0130.01116.78
7.2.320.0100.00716.90
7.2.310.0130.01016.58
7.2.300.0100.00616.60
7.2.290.0090.00616.69
7.2.130.0100.01316.66
7.2.120.0090.00916.71
7.2.110.0180.00316.76
7.2.100.0040.01116.88
7.2.90.0230.00316.98
7.2.80.0030.01216.69
7.2.70.0150.00916.82
7.2.60.0100.00616.94
7.2.50.0120.01216.69
7.2.40.0180.00716.86
7.2.30.0170.00416.63
7.2.20.0110.01116.86
7.2.10.0170.00717.09
7.2.00.0070.00918.20
7.1.250.0080.00415.71
7.1.200.0060.00615.70
7.1.100.0030.01418.07
7.1.70.0000.00817.48
7.1.60.0070.01819.40
7.1.50.0120.01217.19
7.1.00.0030.03322.38
7.0.200.0110.00316.93
7.0.140.0070.07022.01
7.0.120.0030.07722.06
7.0.60.0070.07319.95
7.0.50.0330.03017.82
7.0.40.0030.06020.06
7.0.30.0500.05320.11
7.0.20.0300.05320.16
7.0.10.0230.08320.11
7.0.00.0070.06020.10
5.6.280.0000.07021.14
5.6.210.0070.07020.52
5.6.200.0070.06718.12
5.6.190.0030.07020.61
5.6.180.0300.08320.40
5.6.170.0230.06720.50
5.6.160.0200.04020.33
5.6.150.0070.07018.18
5.6.140.0070.04318.15
5.6.130.0070.05318.18
5.6.120.0130.07720.99
5.6.110.0030.07021.13
5.6.100.0130.07720.98
5.6.90.0070.08720.98
5.6.80.0100.05720.38
5.6.70.0100.03320.39
5.5.350.0400.07320.31
5.5.340.0000.04717.95
5.5.330.0070.03720.37
5.5.320.0230.07720.13
5.5.310.0300.07720.28
5.5.300.0130.03018.02
5.5.290.0030.06718.02
5.5.280.0030.05320.73
5.5.270.0130.05720.76
5.5.260.0030.04020.75
5.5.250.0030.04020.68
5.5.240.0030.08020.21
5.4.450.0130.07319.51
5.4.440.0000.08719.46
5.4.430.0030.07319.50
5.4.420.0170.07019.46
5.4.410.0000.08319.37
5.4.400.0070.08018.93
5.4.390.0100.04319.08
5.4.380.0130.06718.78
5.4.370.0000.04319.18
5.4.360.0070.08019.12
5.4.350.0130.05318.81
5.4.340.0030.04318.92
5.4.320.0130.07319.14
5.4.310.0030.07318.92
5.4.300.0030.06019.07
5.4.290.0070.05719.17
5.4.280.0000.07719.18
5.4.270.0030.07719.07
5.4.260.0200.06718.96
5.4.250.0100.03319.13
5.4.240.0030.07019.00
5.4.230.0100.03319.07
5.4.220.0100.07319.17
5.4.210.0030.05318.79
5.4.200.0070.07318.91
5.4.190.0030.04718.77
5.4.180.0130.07319.06
5.4.170.0130.07019.15
5.4.160.0130.07019.05
5.4.150.0100.07319.11
5.4.140.0000.07316.36
5.4.130.0130.06716.21
5.4.120.0130.06716.24
5.4.110.0070.06716.39
5.4.100.0030.06316.28
5.4.90.0100.04316.24
5.4.80.0100.06716.29
5.4.70.0130.06316.35
5.4.60.0000.08316.34
5.4.50.0070.05716.28
5.4.40.0100.07316.21
5.4.30.0030.07016.38
5.4.20.0070.07316.11
5.4.10.0000.05716.33
5.4.00.0130.05015.61
5.3.290.0100.07014.45
5.3.280.0030.05014.38
5.3.270.0130.06314.52
5.3.260.0030.04014.62
5.3.250.0030.06314.53
5.3.240.0100.07014.53
5.3.230.0070.08314.52
5.3.220.0070.07714.49
5.3.210.0070.07714.46
5.3.200.0130.07014.50
5.3.190.0030.04014.51
5.3.180.0130.07014.48
5.3.170.0170.06314.54
5.3.160.0130.04714.57
5.3.150.0130.07314.50
5.3.140.0070.07714.45
5.3.130.0070.08014.51
5.3.120.0070.08014.48
5.3.110.0130.07314.42
5.3.100.0030.06014.01
5.3.90.0100.03714.11
5.3.80.0100.06713.95
5.3.70.0000.04313.95
5.3.60.0070.07714.02
5.3.50.0170.06313.90
5.3.40.0030.05013.92
5.3.30.0070.03713.85
5.3.20.0130.07013.48
5.3.10.0070.06713.63
5.3.00.0070.06713.57
5.2.170.0000.07011.22
5.2.160.0000.05311.09
5.2.150.0000.06711.00
5.2.140.0070.06011.13
5.2.130.0030.06711.11
5.2.120.0030.06710.97
5.2.110.0070.06011.00
5.2.100.0070.06310.96
5.2.90.0070.05311.09
5.2.80.0100.04711.10
5.2.70.0070.03711.10
5.2.60.0000.06011.00
5.2.50.0030.05310.88
5.2.40.0030.06710.88
5.2.30.0070.03710.93
5.2.20.0170.04710.97
5.2.10.0070.05710.75
5.2.00.0000.04310.71
5.1.60.0030.03310.01
5.1.50.0070.0539.98
5.1.40.0100.0439.94
5.1.30.0000.05310.36
5.1.20.0070.04310.43
5.1.10.0070.02310.04
5.1.00.0070.05310.11
5.0.50.0070.0478.51
5.0.40.0000.0378.30
5.0.30.0070.0378.23
5.0.20.0000.0278.10
5.0.10.0130.0338.11
5.0.00.0000.0578.21
4.4.90.0000.0207.88
4.4.80.0000.0407.88
4.4.70.0030.0337.88
4.4.60.0000.0377.88
4.4.50.0000.0337.88
4.4.40.0000.0577.88
4.4.30.0000.0337.88
4.4.20.0030.0237.88
4.4.10.0070.0307.88
4.4.00.0100.0477.88
4.3.110.0000.0277.88
4.3.100.0000.0207.88
4.3.90.0100.0207.88
4.3.80.0030.0577.88
4.3.70.0100.0207.88
4.3.60.0030.0337.88
4.3.50.0000.0337.88
4.3.40.0000.0377.88
4.3.30.0000.0407.88
4.3.20.0000.0207.88
4.3.10.0030.0137.88
4.3.00.0000.0177.88

preferences:
50.99 ms | 401 KiB | 5 Q