3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "ab"; echo preg_replace("/(a)|(b)/", "+$2+-$1-", $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)
8.3.60.0120.00416.63
8.3.50.0150.00016.39
8.3.40.0090.00618.96
8.3.30.0040.01218.76
8.3.20.0040.00420.21
8.3.10.0070.00323.41
8.3.00.0040.00422.09
8.2.180.0150.00316.63
8.2.170.0140.00022.96
8.2.160.0140.00019.06
8.2.150.0060.00324.18
8.2.140.0050.00324.66
8.2.130.0040.00419.30
8.2.120.0000.00826.35
8.2.110.0000.01122.27
8.2.100.0040.00817.84
8.2.90.0000.00819.21
8.2.80.0080.00017.97
8.2.70.0030.00617.61
8.2.60.0030.00618.05
8.2.50.0040.00418.10
8.2.40.0040.00420.59
8.2.30.0000.00821.17
8.2.20.0060.00318.08
8.2.10.0030.00617.95
8.2.00.0070.00017.89
8.1.280.0130.00325.92
8.1.270.0040.00423.79
8.1.260.0000.00726.35
8.1.250.0000.00728.09
8.1.240.0060.00321.07
8.1.230.0090.00319.14
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0050.00317.35
8.1.180.0000.00818.10
8.1.170.0070.00018.88
8.1.160.0040.00418.95
8.1.150.0000.00820.57
8.1.140.0000.00819.57
8.1.130.0000.00818.77
8.1.120.0040.00417.54
8.1.110.0000.00717.41
8.1.100.0000.00717.50
8.1.90.0000.00717.43
8.1.80.0040.00417.43
8.1.70.0030.00317.58
8.1.60.0000.00917.64
8.1.50.0030.00517.61
8.1.40.0000.00817.59
8.1.30.0080.00017.67
8.1.20.0040.00417.75
8.1.10.0040.00417.57
8.1.00.0040.00417.58
8.0.300.0040.00420.16
8.0.290.0030.00616.88
8.0.280.0000.00718.50
8.0.270.0030.00317.16
8.0.260.0000.00716.96
8.0.250.0040.00417.06
8.0.240.0090.00317.09
8.0.230.0000.00817.04
8.0.220.0060.00016.86
8.0.210.0000.00716.85
8.0.200.0030.00317.05
8.0.190.0030.00617.01
8.0.180.0040.00416.90
8.0.170.0040.00417.00
8.0.160.0040.00417.01
8.0.150.0070.00016.89
8.0.140.0000.00716.96
8.0.130.0030.00313.47
8.0.120.0040.00416.91
8.0.110.0000.00716.92
8.0.100.0040.00417.03
8.0.90.0080.00016.77
8.0.80.0070.01017.02
8.0.70.0080.00016.86
8.0.60.0040.00416.79
8.0.50.0070.00016.84
8.0.30.0120.00517.12
8.0.20.0120.00817.40
8.0.10.0000.00716.96
8.0.00.0040.01516.95
7.4.330.0030.00315.55
7.4.320.0030.00316.77
7.4.300.0040.00416.63
7.4.290.0030.00316.62
7.4.280.0050.00316.63
7.4.270.0000.00716.77
7.4.260.0000.00716.74
7.4.250.0040.00416.61
7.4.240.0070.00016.65
7.4.230.0000.00716.68
7.4.220.0120.00616.67
7.4.210.0100.00916.61
7.4.200.0000.00716.45
7.4.160.0080.01016.61
7.4.150.0070.01017.40
7.4.140.0060.01117.86
7.4.130.0090.00916.55
7.4.120.0100.01016.71
7.4.110.0140.00616.52
7.4.100.0050.01816.78
7.4.90.0030.01516.35
7.4.80.0110.01119.39
7.4.70.0130.00316.75
7.4.60.0060.01216.72
7.4.50.0100.00716.58
7.4.40.0000.01616.76
7.4.30.0090.00816.73
7.4.00.0050.01115.04
7.3.330.0030.00313.13
7.3.320.0000.00513.01
7.3.310.0050.00316.38
7.3.300.0000.00616.29
7.3.290.0070.01316.30
7.3.280.0060.01116.29
7.3.270.0110.00617.40
7.3.260.0110.00616.52
7.3.250.0120.00816.68
7.3.240.0110.00916.53
7.3.230.0170.00616.24
7.3.210.0080.00816.74
7.3.200.0060.01016.40
7.3.190.0040.01816.63
7.3.180.0070.01416.40
7.3.170.0060.01216.22
7.3.160.0130.01016.36
7.3.120.0100.00715.09
7.3.110.0090.00614.74
7.3.100.0120.00314.93
7.3.90.0040.01414.82
7.3.80.0030.00914.96
7.3.70.0000.01614.92
7.3.60.0030.00614.99
7.3.50.0030.00914.89
7.3.40.0120.00614.94
7.3.30.0120.00314.76
7.3.20.0090.00616.86
7.3.10.0130.00016.48
7.3.00.0040.00416.81
7.2.330.0140.00416.57
7.2.320.0040.01416.73
7.2.310.0150.00616.72
7.2.300.0100.01016.57
7.2.290.0090.00716.69
7.2.250.0060.01314.74
7.2.240.0080.00815.26
7.2.230.0060.01015.09
7.2.220.0070.00414.92
7.2.210.0070.01015.02
7.2.200.0030.01315.04
7.2.190.0000.01415.14
7.2.180.0000.01414.86
7.2.170.0120.00314.75
7.2.60.0030.01316.89
7.2.00.0030.01019.31
7.1.330.0040.00816.11
7.1.320.0110.00415.92
7.1.310.0030.00615.87
7.1.300.0000.01215.95
7.1.290.0030.01315.93
7.1.280.0090.00915.80
7.1.270.0070.01016.05
7.1.260.0030.00715.78
7.1.200.0080.00415.89
7.1.100.0060.00618.07
7.1.70.0040.01117.18
7.1.60.0430.00935.26
7.1.50.0270.02034.64
7.1.40.0150.02134.55
7.1.30.0240.01434.55
7.1.20.0320.01034.79
7.1.10.0040.01416.75
7.1.00.0120.00616.91
7.0.200.0140.00616.84
7.0.190.0120.01316.64
7.0.180.0030.01316.28
7.0.170.0030.01316.50
7.0.160.0070.01316.41
7.0.150.0060.01216.26
7.0.140.0070.01016.27
7.0.130.0030.02016.63
7.0.120.0080.00816.77
7.0.110.0120.01216.55
7.0.100.0100.01416.44
7.0.90.0530.01214.82
7.0.80.0540.01216.68
7.0.70.0090.01516.18
7.0.60.0040.01716.06
7.0.50.0200.00016.42
7.0.40.0120.00916.66
7.0.30.0130.00816.38
7.0.20.0470.01416.56
7.0.10.0070.01516.40
7.0.00.0430.01216.44

preferences:
46.04 ms | 400 KiB | 5 Q