3v4l.org

run code in 300+ PHP versions simultaneously
<?php $txt = 'dog blah crocodile blah dog blah cat blah crocodile blah dog blah crocodile blah dog blah cat blah dog blah cat blah crocodile blah dog blah crocodile blah mice blah cat blah crocodile'; //dog blah replacement blah dog blah cat blah crocodile blah dog blah replacement blah dog blah cat blah dog blah cat blah crocodile blah dog blah replacement blah mice blah cat blah crocodile echo preg_replace('/(?:dog|mice)(?:(?!dog|mice|cat).)* \Kcrocodile(?= (?:(?!dog|mice|cat).)* (?:dog|mice))/', 'replacement', $txt);

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)
8.3.60.0120.00918.68
8.3.50.0210.00018.28
8.3.40.0080.00818.96
8.3.30.0090.00918.90
8.3.20.0030.00521.57
8.3.10.0030.00522.13
8.3.00.0040.00423.48
8.2.180.0180.00018.54
8.2.170.0130.00322.96
8.2.160.0140.00022.23
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0050.00326.16
8.2.120.0050.00320.83
8.2.110.0060.00319.38
8.2.100.0060.00617.84
8.2.90.0000.00818.28
8.2.80.0060.00320.56
8.2.70.0000.00817.75
8.2.60.0050.00317.63
8.2.50.0030.00518.05
8.2.40.0040.00418.22
8.2.30.0030.00618.06
8.2.20.0050.00218.05
8.2.10.0030.00619.29
8.2.00.0050.00219.26
8.1.280.0140.00725.92
8.1.270.0030.00522.34
8.1.260.0030.00526.35
8.1.250.0000.00828.09
8.1.240.0060.00622.04
8.1.230.0070.00722.41
8.1.220.0040.00417.79
8.1.210.0030.00518.77
8.1.200.0050.00317.25
8.1.190.0050.00317.23
8.1.180.0110.00018.10
8.1.170.0040.00417.62
8.1.160.0040.00418.73
8.1.150.0000.00718.87
8.1.140.0040.00418.83
8.1.130.0030.00320.11
8.1.120.0040.00417.52
8.1.110.0040.00417.43
8.1.100.0000.00717.54
8.1.90.0000.00717.59
8.1.80.0080.00017.57
8.1.70.0050.00317.55
8.1.60.0040.00417.62
8.1.50.0040.00417.52
8.1.40.0000.00817.68
8.1.30.0050.00517.58
8.1.20.0050.00317.59
8.1.10.0000.00817.60
8.1.00.0040.00417.53
8.0.300.0040.00419.89
8.0.290.0060.00316.88
8.0.280.0040.00418.48
8.0.270.0000.00718.17
8.0.260.0000.00618.43
8.0.250.0030.00317.05
8.0.240.0030.00317.02
8.0.230.0030.00317.07
8.0.220.0000.00716.94
8.0.210.0040.00416.91
8.0.200.0000.00717.03
8.0.190.0060.00317.05
8.0.180.0040.00416.90
8.0.170.0000.00917.02
8.0.160.0040.00417.01
8.0.150.0040.00416.93
8.0.140.0030.00616.94
8.0.130.0030.00313.41
8.0.120.0030.00716.95
8.0.110.0000.00816.84
8.0.100.0030.00517.05
8.0.90.0040.00417.02
8.0.80.0050.01116.97
8.0.70.0000.00816.95
8.0.60.0040.00417.02
8.0.50.0080.00016.95
8.0.30.0090.00917.25
8.0.20.0090.00917.39
8.0.10.0030.00517.00
8.0.00.0090.00917.12
7.4.330.0050.00015.55
7.4.320.0060.00016.52
7.4.300.0020.00516.77
7.4.290.0000.00716.77
7.4.280.0080.00016.64
7.4.270.0000.00716.70
7.4.260.0050.00013.36
7.4.250.0000.00716.69
7.4.240.0000.00716.71
7.4.230.0070.00016.41
7.4.220.0000.00716.61
7.4.210.0070.00916.77
7.4.200.0030.00316.54
7.4.130.0080.01116.60
7.4.120.0090.00916.89
7.4.110.0090.01416.55
7.4.100.0180.00316.59
7.4.90.0160.00616.65
7.4.80.0070.01019.39
7.4.70.0140.00316.57
7.4.60.0120.00316.55
7.4.50.0140.00416.48
7.4.40.0100.01016.33
7.4.30.0100.00716.63
7.4.20.0090.01016.52
7.4.10.0090.00916.48
7.4.00.0140.00516.58
7.3.330.0000.00716.38
7.3.320.0030.00313.14
7.3.310.0030.00316.23
7.3.300.0030.00316.14
7.3.290.0100.00416.25
7.3.260.0090.00916.60
7.3.240.0090.00816.56
7.3.230.0090.00916.67
7.3.210.0160.00016.59
7.3.200.0160.00616.48
7.3.190.0130.00516.61
7.3.180.0030.01316.46
7.3.170.0140.00716.28
7.3.160.0100.01316.53
7.3.150.0070.01416.34
7.3.140.0190.00016.41
7.3.130.0070.01116.16
7.3.120.0090.01316.56
7.3.110.0130.01116.34
7.3.100.0110.01116.51
7.3.90.0130.00716.33
7.3.80.0160.00816.17
7.3.70.0070.01616.28
7.3.60.0140.00616.41
7.3.50.0120.01416.47
7.3.40.0100.01316.39
7.3.30.0070.01716.47
7.3.20.0110.01116.44
7.3.10.0070.02016.30
7.3.00.0140.01016.54
7.2.330.0170.00716.48
7.2.320.0090.00916.74
7.2.310.0080.00816.66
7.2.300.0100.00616.68
7.2.290.0050.01416.67
7.2.280.0120.00616.56
7.2.270.0190.00016.57
7.2.260.0110.00716.58
7.2.250.0070.01416.68
7.2.240.0130.00916.49
7.2.230.0030.01716.41
7.2.220.0180.00616.53
7.2.210.0170.01016.71
7.2.200.0040.01716.50
7.2.190.0120.01216.53
7.2.180.0180.00616.38
7.2.170.0100.01616.54
7.2.160.0110.01516.54
7.2.150.0200.00716.49
7.2.140.0090.01316.48
7.2.130.0100.01416.53
7.2.120.0090.00916.57
7.2.110.0070.01316.69
7.2.100.0120.01216.65
7.2.90.0090.01216.48
7.2.80.0210.00316.45
7.2.70.0160.00516.60
7.2.60.0150.01216.50
7.2.50.0160.00716.61
7.2.40.0060.01416.64
7.2.30.0200.00716.73
7.2.20.0150.00916.70
7.2.10.0120.01216.58
7.2.00.0120.01216.52

preferences:
35.07 ms | 400 KiB | 5 Q