3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "regex!"; echo preg_replace('/\(\d+\)/', '\\1\\1', "16656400");

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)
8.3.60.0130.00618.55
8.3.50.0130.00722.05
8.3.40.0110.01118.84
8.3.30.0110.00419.10
8.3.20.0000.00720.34
8.3.10.0040.00421.92
8.3.00.0080.00022.42
8.2.180.0120.00316.63
8.2.170.0030.01022.96
8.2.160.0170.00320.77
8.2.150.0000.00824.18
8.2.140.0060.00324.66
8.2.130.0100.00326.16
8.2.120.0080.00019.36
8.2.110.0060.00322.07
8.2.100.0080.00317.85
8.2.90.0040.00417.95
8.2.80.0040.00418.04
8.2.70.0000.00917.63
8.2.60.0080.00017.93
8.2.50.0030.00518.07
8.2.40.0000.00718.03
8.2.30.0000.00718.00
8.2.20.0050.00317.80
8.2.10.0050.00217.58
8.2.00.0050.00517.57
8.1.280.0030.01425.92
8.1.270.0100.00022.14
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0090.00022.20
8.1.230.0040.00721.00
8.1.220.0030.00617.74
8.1.210.0030.00618.85
8.1.200.0060.00317.23
8.1.190.0000.00817.38
8.1.180.0000.00818.61
8.1.170.0000.00818.70
8.1.160.0040.00421.98
8.1.150.0050.00218.59
8.1.140.0000.00817.41
8.1.130.0000.00819.17
8.1.120.0000.00717.37
8.1.110.0030.00517.46
8.1.100.0040.00417.38
8.1.90.0000.00717.46
8.1.80.0030.00417.48
8.1.70.0000.00717.35
8.1.60.0040.00417.60
8.1.50.0050.00317.50
8.1.40.0000.00817.59
8.1.30.0080.00017.62
8.1.20.0040.00417.57
8.1.10.0080.00017.48
8.1.00.0000.00717.57
8.0.300.0000.00720.07
8.0.290.0000.00717.05
8.0.280.0000.00718.35
8.0.270.0030.00317.21
8.0.260.0030.00316.82
8.0.250.0050.00317.10
8.0.240.0000.00816.93
8.0.230.0030.00316.88
8.0.220.0040.00416.81
8.0.210.0000.00816.81
8.0.200.0040.00416.88
8.0.190.0060.00316.98
8.0.180.0070.00016.94
8.0.170.0040.00416.94
8.0.160.0040.00416.86
8.0.150.0030.00316.82
8.0.140.0040.00416.73
8.0.130.0030.00313.37
8.0.120.0080.00016.77
8.0.110.0080.00016.94
8.0.100.0050.00316.86
8.0.90.0040.00416.70
8.0.80.0120.00316.88
8.0.70.0000.00716.97
8.0.60.0070.00016.70
8.0.50.0020.00516.79
8.0.30.0130.00816.97
8.0.20.0100.01017.40
8.0.10.0040.00417.06
8.0.00.0140.00416.54
7.4.330.0050.00015.01
7.4.320.0060.00016.59
7.4.300.0060.00016.57
7.4.290.0030.00316.65
7.4.280.0050.00316.53
7.4.270.0000.00716.66
7.4.260.0000.01116.54
7.4.250.0040.00416.61
7.4.240.0020.00516.63
7.4.230.0030.00316.58
7.4.220.0150.00416.77
7.4.210.0080.00616.62
7.4.200.0050.00316.38
7.4.190.0000.00716.74
7.4.160.0120.00616.42
7.4.150.0090.00917.40
7.4.140.0070.01117.86
7.4.130.0110.00616.74
7.4.120.0110.00616.54
7.4.110.0070.01716.74
7.4.100.0060.01116.42
7.4.90.0060.01216.39
7.4.80.0140.01019.39
7.4.70.0130.00316.80
7.4.60.0090.00616.35
7.4.50.0050.00316.38
7.4.40.0090.00822.77
7.4.30.0100.00716.56
7.4.00.0070.00314.86
7.3.330.0050.00013.25
7.3.320.0000.00513.21
7.3.310.0040.00416.41
7.3.300.0040.00416.27
7.3.290.0030.01016.27
7.3.280.0100.00516.25
7.3.270.0060.01017.40
7.3.260.0110.00516.23
7.3.250.0080.01016.40
7.3.240.0110.00716.31
7.3.230.0140.01116.44
7.3.210.0030.01416.39
7.3.200.0150.00819.39
7.3.190.0100.00716.30
7.3.180.0090.00816.58
7.3.170.0140.00616.52
7.3.160.0000.01616.38
7.3.120.0100.00315.19
7.3.10.0040.00716.57
7.3.00.0030.00916.68
7.2.330.0110.00616.81
7.2.320.0130.01016.56
7.2.310.0100.00716.53
7.2.300.0050.01116.86
7.2.290.0060.00916.59
7.2.130.0060.00617.02
7.2.120.0030.00916.55
7.2.110.0030.00916.86
7.2.100.0000.01117.07
7.2.90.0070.00316.63
7.2.80.0060.00616.93
7.2.70.0030.00716.99
7.2.60.0120.00816.96
7.2.50.0070.00716.82
7.2.40.0000.01316.70
7.2.30.0000.01316.93
7.2.20.0100.00317.02
7.2.10.0030.01016.86
7.2.00.0060.00618.11
7.1.250.0060.00615.80
7.1.200.0060.00615.63
7.1.100.0030.00918.39
7.1.70.0060.00317.34
7.1.60.0170.00719.82
7.1.50.0040.01417.13
7.1.00.0030.07722.46
7.0.200.0170.00316.38
7.0.140.0030.07322.21
7.0.60.0100.05319.99
7.0.50.0100.07017.82
7.0.40.0100.07020.09
7.0.30.0300.07720.02
7.0.20.0330.06320.18
7.0.10.0370.07020.13
7.0.00.0000.04720.01
5.6.280.0030.07321.06
5.6.210.0070.07320.46
5.6.200.0100.06718.23
5.6.190.0070.04320.27
5.6.180.3000.03720.41
5.6.170.0330.06720.52
5.6.160.0030.04320.51
5.6.150.0030.08318.11
5.6.140.0070.08318.08
5.6.130.0070.08718.10
5.6.120.0000.09020.98
5.6.110.0070.07720.96
5.6.100.0030.06321.00
5.6.90.0100.08021.11
5.6.80.0170.06020.27
5.6.70.0100.04020.51
5.5.350.0070.07720.40
5.5.340.0070.08018.02
5.5.330.0100.08020.21
5.5.320.0170.04720.30
5.5.310.0300.04020.50
5.5.300.0030.04317.98
5.5.290.0130.07317.98
5.5.280.0000.04320.89
5.5.270.0070.08720.86
5.5.260.0070.08720.75
5.5.250.0030.08020.48
5.5.240.0100.07020.02
5.4.450.0070.06019.26
5.4.440.0270.04719.48
5.4.430.0100.05719.53
5.4.420.0070.06719.46
5.4.410.0200.04319.44
5.4.400.1370.00018.77
5.4.390.1470.00018.58
5.4.380.0170.06018.50
5.4.370.0170.06318.56
5.4.360.0400.04718.50
5.4.350.0400.05018.59
5.4.340.0300.06018.70
5.4.320.0110.03012.45
5.4.310.0040.04012.45
5.4.300.0080.03512.45
5.4.290.0090.04512.45
5.4.280.0050.03612.34
5.4.270.0050.03812.34
5.4.260.0030.05318.88
5.4.250.0130.04719.01
5.4.240.0070.05318.86
5.4.230.0100.05018.81
5.4.220.0030.06018.96
5.4.210.0070.05718.99
5.4.200.0130.04718.82
5.4.190.0200.04318.88
5.4.180.0130.04718.67
5.4.170.0130.04718.62
5.4.160.0200.04018.69
5.4.150.0100.07718.73
5.4.140.0170.04316.26
5.4.130.0130.04016.44
5.4.120.0130.04016.24
5.4.110.0070.05016.50
5.4.100.0100.06316.32
5.4.90.0100.04716.38
5.4.80.0270.04716.38
5.4.70.0130.04316.38
5.4.60.0100.05316.18
5.4.50.0100.06316.40
5.4.40.0070.05316.35
5.4.30.0070.05716.29
5.4.20.0070.04716.44
5.4.10.0030.05016.40
5.4.00.0030.05315.98
5.3.290.0110.04312.80
5.3.280.0100.04714.44
5.3.270.0130.04714.61
5.3.260.0000.06314.70
5.3.250.0070.05314.61
5.3.240.0170.05014.48
5.3.230.0000.05714.64
5.3.220.0070.05014.33
5.3.210.0070.05314.45
5.3.200.0170.06314.26
5.3.190.0030.05014.45
5.3.180.0130.04714.26
5.3.170.0130.04314.40
5.3.160.0030.07014.41
5.3.150.0070.05014.61
5.3.140.0000.05314.41
5.3.130.0070.05314.55
5.3.120.0100.04714.65
5.3.110.0070.05714.54
5.3.100.0070.04714.05
5.3.90.0070.04714.03
5.3.80.0100.04314.10
5.3.70.0070.05713.95
5.3.60.0070.04713.71
5.3.50.0070.05013.86
5.3.40.0100.05013.71
5.3.30.0030.05313.75
5.3.20.0100.05013.70
5.3.10.0070.06713.56
5.3.00.0100.07013.68
5.2.170.0100.03711.07
5.2.160.0030.04011.13
5.2.150.0070.04011.02
5.2.140.0070.04011.23
5.2.130.0030.04711.00
5.2.120.0130.04011.21
5.2.110.0030.04711.24
5.2.100.0000.05011.11
5.2.90.0030.06010.85
5.2.80.0170.04011.09
5.2.70.0130.04011.18
5.2.60.0070.04711.04
5.2.50.0030.06011.13
5.2.40.0070.04010.91
5.2.30.0070.05710.99
5.2.20.0170.04310.96
5.2.10.0030.04011.01
5.2.00.0070.04010.79
5.1.60.0030.0379.93
5.1.50.0030.03710.01
5.1.40.0130.0479.88
5.1.30.0100.03310.48
5.1.20.0130.02710.50
5.1.10.0070.03710.15
5.1.00.0100.03310.02
5.0.50.0030.0278.68
5.0.40.0070.0408.46
5.0.30.0100.0408.10
5.0.20.0130.0178.10
5.0.10.0030.0277.95
5.0.00.0100.0338.19
4.4.90.0030.0277.50
4.4.80.0000.0277.50
4.4.70.0070.0277.50
4.4.60.0030.0207.50
4.4.50.0000.0337.50
4.4.40.0070.0377.50
4.4.30.0030.0207.50
4.4.20.0000.0237.50
4.4.10.0030.0207.50
4.4.00.0030.0437.50
4.3.110.0000.0237.50
4.3.100.0000.0237.50
4.3.90.0000.0237.50
4.3.80.0000.0407.50
4.3.70.0030.0207.50
4.3.60.0000.0237.50
4.3.50.0000.0277.50
4.3.40.0070.0337.50
4.3.30.0000.0207.50
4.3.20.0000.0237.50
4.3.10.0000.0237.50
4.3.00.0000.0237.30

preferences:
64.47 ms | 401 KiB | 5 Q