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)
8.3.60.0130.01016.63
8.3.50.0120.00316.32
8.3.40.0110.00318.77
8.3.30.0040.01118.84
8.3.20.0040.00420.07
8.3.10.0110.00021.61
8.3.00.0050.00321.95
8.2.180.0110.00316.50
8.2.170.0090.00622.96
8.2.160.0110.00719.06
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00419.31
8.2.120.0050.00326.35
8.2.110.0040.00820.84
8.2.100.0080.00417.91
8.2.90.0000.00819.22
8.2.80.0040.00418.04
8.2.70.0070.00317.63
8.2.60.0080.00017.91
8.2.50.0040.00418.10
8.2.40.0030.00520.64
8.2.30.0050.00321.05
8.2.20.0050.00517.98
8.2.10.0000.00718.04
8.2.00.0030.00517.96
8.1.280.0120.00925.92
8.1.270.0000.00722.13
8.1.260.0050.00226.35
8.1.250.0070.00028.09
8.1.240.0060.00323.92
8.1.230.0030.00719.15
8.1.220.0000.00817.74
8.1.210.0100.00018.77
8.1.200.0060.00317.34
8.1.190.0030.00517.10
8.1.180.0000.00818.10
8.1.170.0040.00418.91
8.1.160.0000.00719.03
8.1.150.0030.00620.61
8.1.140.0040.00419.52
8.1.130.0030.00318.89
8.1.120.0040.00417.29
8.1.110.0040.00417.32
8.1.100.0030.00317.33
8.1.90.0000.00817.38
8.1.80.0040.00417.35
8.1.70.0070.00017.38
8.1.60.0070.00417.56
8.1.50.0040.00417.43
8.1.40.0000.00817.50
8.1.30.0080.00017.52
8.1.20.0070.00017.69
8.1.10.0040.00417.49
8.1.00.0040.00417.51
8.0.300.0000.00720.01
8.0.290.0040.00416.75
8.0.280.0030.00318.39
8.0.270.0070.00017.13
8.0.260.0030.00316.74
8.0.250.0030.00316.97
8.0.240.0030.00716.85
8.0.230.0090.00017.02
8.0.220.0030.00316.88
8.0.210.0040.00416.90
8.0.200.0030.00316.84
8.0.190.0030.00616.85
8.0.180.0040.00416.84
8.0.170.0000.00716.87
8.0.160.0000.00716.93
8.0.150.0000.00716.75
8.0.140.0030.00516.81
8.0.130.0000.00513.32
8.0.120.0000.00816.88
8.0.110.0050.00316.86
8.0.100.0030.00516.95
8.0.90.0040.00416.89
8.0.80.0030.01716.95
8.0.70.0020.00516.87
8.0.60.0080.00016.73
8.0.50.0070.00016.93
8.0.30.0110.00517.04
8.0.20.0120.00717.40
8.0.10.0080.00017.08
8.0.00.0110.01116.88
7.4.330.0000.00615.55
7.4.320.0000.00716.45
7.4.300.0000.00616.43
7.4.290.0000.00716.44
7.4.280.0080.00016.57
7.4.270.0000.00716.33
7.4.260.0000.00716.28
7.4.250.0030.00516.54
7.4.240.0000.00716.56
7.4.230.0030.00316.52
7.4.220.0130.01016.44
7.4.210.0100.00716.50
7.4.200.0070.00016.51
7.4.160.0090.00916.50
7.4.150.0110.00617.40
7.4.140.0070.01017.86
7.4.130.0140.01116.54
7.4.120.0120.00716.38
7.4.110.0120.00916.45
7.4.100.0080.01116.54
7.4.90.0100.00716.34
7.4.80.0090.00919.39
7.4.70.0060.00916.35
7.4.60.0060.01216.53
7.4.50.0100.00316.66
7.4.40.0080.00816.41
7.4.30.0120.00616.40
7.4.00.0090.00914.96
7.3.330.0000.00513.12
7.3.320.0000.00613.14
7.3.310.0000.00716.14
7.3.300.0070.00016.14
7.3.290.0080.00816.20
7.3.280.0070.01016.17
7.3.270.0060.01117.40
7.3.260.0090.00916.16
7.3.250.0100.00916.34
7.3.240.0110.00816.21
7.3.230.0100.00616.48
7.3.210.0070.01016.48
7.3.200.0030.01316.37
7.3.190.0090.00616.42
7.3.180.0140.00716.45
7.3.170.0130.00316.46
7.3.160.0130.00316.24
7.2.330.0140.00316.23
7.2.320.0030.02016.55
7.2.310.0150.00616.64
7.2.300.0100.01416.46
7.2.290.0080.00816.38
7.2.60.0000.01016.83
7.2.00.0030.01319.30
7.1.200.0070.00715.41
7.1.100.0050.00317.95
7.1.70.0060.01317.25
7.1.60.0920.02234.89
7.1.50.0670.00734.40
7.1.40.0220.01334.36
7.1.30.0330.01034.50
7.1.20.0380.00934.63
7.1.10.0300.00914.64
7.1.00.0120.00616.76
7.0.200.0540.01314.91
7.0.190.0080.01116.34
7.0.180.0090.00916.18
7.0.170.0100.01216.09
7.0.160.0570.01514.39
7.0.150.0300.01014.36
7.0.140.0050.01416.14
7.0.130.0090.01016.57
7.0.120.0100.01116.30
7.0.110.0080.01116.25
7.0.100.0000.01816.11
7.0.90.0110.00816.10
7.0.80.0030.01516.31
7.0.70.0080.00816.37
7.0.60.0400.02016.16
7.0.50.0060.01316.25
7.0.40.0060.01216.36
7.0.30.0100.01016.48
7.0.20.0070.01316.40
7.0.10.0140.00516.51
7.0.00.0090.00916.11

preferences:
35.73 ms | 400 KiB | 5 Q