3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "abab"; preg_replace("/(a)/", "$1-", $a); echo $a;

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)
8.3.70.0040.01118.43
8.3.60.0120.00316.50
8.3.50.0120.00416.51
8.3.40.0040.01119.00
8.3.30.0060.00918.97
8.3.20.0040.00420.29
8.3.10.0030.00523.65
8.3.00.0080.00022.02
8.2.180.0160.00616.63
8.2.170.0070.01422.96
8.2.160.0110.00319.06
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0040.00419.27
8.2.120.0000.00826.35
8.2.110.0100.00021.12
8.2.100.0040.00717.91
8.2.90.0040.00419.12
8.2.80.0070.00017.97
8.2.70.0030.00517.75
8.2.60.0040.00418.03
8.2.50.0060.00318.10
8.2.40.0060.00320.43
8.2.30.0030.00620.93
8.2.20.0000.00817.96
8.2.10.0000.00818.06
8.2.00.0050.00217.96
8.1.280.0110.00425.92
8.1.270.0030.00622.19
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0040.00419.21
8.1.230.0060.00619.16
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0030.00617.36
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0000.00818.66
8.1.160.0020.00519.10
8.1.150.0000.00718.82
8.1.140.0040.00419.59
8.1.130.0030.00318.84
8.1.120.0060.00317.46
8.1.110.0000.00717.41
8.1.100.0080.00017.45
8.1.90.0000.00817.47
8.1.80.0040.00417.55
8.1.70.0070.00017.57
8.1.60.0040.00417.55
8.1.50.0000.00817.63
8.1.40.0040.00417.65
8.1.30.0000.00817.72
8.1.20.0000.00717.75
8.1.10.0040.00417.65
8.1.00.0000.00717.66
8.0.300.0000.00720.11
8.0.290.0000.00816.75
8.0.280.0070.00018.51
8.0.270.0080.00017.21
8.0.260.0000.00816.92
8.0.250.0000.00717.08
8.0.240.0040.00417.09
8.0.230.0030.00517.05
8.0.220.0080.00017.04
8.0.210.0000.00717.02
8.0.200.0000.00617.05
8.0.190.0000.00817.00
8.0.180.0000.00716.89
8.0.170.0000.00717.03
8.0.160.0040.00417.04
8.0.150.0040.00416.85
8.0.140.0000.00716.77
8.0.130.0060.00013.38
8.0.120.0050.00216.85
8.0.110.0040.00417.09
8.0.100.0020.00516.92
8.0.90.0040.00416.97
8.0.80.0120.00916.95
8.0.70.0040.00416.75
8.0.60.0040.00416.95
8.0.50.0040.00417.01
8.0.30.0140.00417.25
8.0.20.0090.01017.40
8.0.10.0040.00417.10
8.0.00.0160.00016.63
7.4.330.0000.00515.55
7.4.320.0030.00316.66
7.4.300.0030.00316.64
7.4.290.0070.00016.72
7.4.280.0030.00616.55
7.4.270.0000.00716.76
7.4.260.0030.00316.68
7.4.250.0080.00016.76
7.4.240.0000.00716.65
7.4.230.0040.00416.55
7.4.220.0120.00916.80
7.4.210.0070.00716.78
7.4.200.0000.00716.83
7.4.160.0100.00716.73
7.4.150.0040.01417.40
7.4.140.0100.00717.86
7.4.130.0150.00316.53
7.4.120.0130.00916.59
7.4.110.0100.00616.63
7.4.100.0070.01016.76
7.4.90.0030.01316.64
7.4.80.0140.00319.39
7.4.70.0060.01016.66
7.4.60.0090.00616.55
7.4.50.0000.01316.38
7.4.40.0030.01316.81
7.4.30.0130.00916.53
7.4.00.0040.01114.80
7.3.330.0030.00313.25
7.3.320.0000.00513.07
7.3.310.0030.00516.44
7.3.300.0000.00716.25
7.3.290.0030.00316.27
7.3.280.0090.00816.34
7.3.270.0100.00917.40
7.3.260.0120.00516.48
7.3.250.0100.00816.41
7.3.240.0100.00716.72
7.3.230.0080.00816.43
7.3.210.0250.02216.55
7.3.200.0060.01316.42
7.3.190.0140.00716.58
7.3.180.0070.01116.27
7.3.170.0070.01016.62
7.3.160.0080.00816.61
7.3.120.0070.01015.12
7.3.110.0040.01514.75
7.3.100.0070.01015.14
7.3.90.0040.01214.70
7.3.80.0060.01014.95
7.3.70.0030.00715.05
7.3.60.0130.00315.04
7.3.50.0070.00714.62
7.3.40.0130.00314.49
7.3.30.0060.00614.82
7.3.20.0070.01116.79
7.3.10.0050.00916.76
7.3.00.0070.00616.80
7.2.330.0040.01316.44
7.2.320.0160.00016.67
7.2.310.0090.01216.69
7.2.300.0100.01316.73
7.2.290.0090.00916.77
7.2.240.0030.00915.10
7.2.230.0110.00314.83
7.2.220.0060.00914.75
7.2.210.0070.01114.76
7.2.200.0090.00615.04
7.2.190.0000.01414.98
7.2.180.0000.01615.02
7.2.170.0120.00315.10
7.2.160.0070.01114.95
7.2.150.0160.00317.18
7.2.140.0060.00916.96
7.2.130.0080.00916.71
7.2.120.0090.00516.97
7.2.110.0040.01216.91
7.2.100.0040.00816.90
7.2.90.0090.00816.84
7.2.80.0070.00816.84
7.2.70.0080.00616.93
7.2.60.0050.00816.85
7.2.50.0060.00816.82
7.2.40.0100.00516.90
7.2.30.0060.01016.96
7.2.20.0100.00617.11
7.2.10.0050.00816.93
7.2.00.0080.00617.52
7.1.330.0030.01315.89
7.1.320.0050.00515.84
7.1.310.0070.00715.83
7.1.300.0000.01415.96
7.1.290.0040.00815.92
7.1.280.0090.00616.05
7.1.270.0040.01215.91
7.1.260.0100.00615.93
7.1.250.0060.01015.81
7.1.200.0090.00315.66
7.1.100.0070.00718.27
7.1.70.0320.00915.38
7.1.60.0480.02133.63
7.1.50.0590.01533.21
7.1.40.0470.00632.83
7.1.30.0530.00932.86
7.1.20.0140.02834.58
7.1.10.0060.01816.95
7.1.00.0090.01216.87
7.0.200.0370.00414.95
7.0.190.0400.01214.96
7.0.180.0330.01314.48
7.0.170.0780.01316.65
7.0.160.0060.01716.51
7.0.150.0120.01216.47
7.0.140.0070.01516.55
7.0.130.0060.01616.62
7.0.120.0110.01116.80
7.0.110.0060.01616.45
7.0.100.0090.01216.47
7.0.90.0090.01316.57
7.0.80.0060.01216.58
7.0.70.0060.01116.51
7.0.60.0070.01316.50
7.0.50.0100.00816.57
7.0.40.0070.01116.74
7.0.30.0120.00716.89
7.0.20.0130.00916.57
7.0.10.0130.01116.51
7.0.00.0090.01116.74

preferences:
37.85 ms | 401 KiB | 5 Q