3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '(((?!a).)*)*a\\{'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".mb_ereg_replace($regex,'WORKED',$test_string)."\n"; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "2:".preg_replace('/(*UPC)'.$regex.'/u','WORKED',$test_string)."\n"; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "3:".preg_replace('/'.$regex.'/','WORKED',$test_string)."\n";

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)
8.3.60.0160.01017.00
8.3.50.0120.01422.14
8.3.40.0070.01118.92
8.3.30.0120.00619.16
8.3.20.0030.00620.33
8.3.10.0080.00323.67
8.3.00.0070.00319.63
8.2.180.0130.01318.79
8.2.170.0130.01322.96
8.2.160.0130.01320.52
8.2.150.0030.00624.18
8.2.140.0050.00524.66
8.2.130.0030.01426.16
8.2.120.0000.00922.32
8.2.110.0130.00722.50
8.2.100.0120.00418.13
8.2.90.0000.01119.25
8.2.80.0060.00618.16
8.2.70.0040.00817.86
8.2.60.0000.01117.93
8.2.50.0060.00618.07
8.2.40.0080.00318.25
8.2.30.0070.00318.21
8.2.20.0000.01017.97
8.2.10.0000.01118.16
8.2.00.0000.01417.82
8.1.280.0110.01525.92
8.1.270.0070.00322.07
8.1.260.0000.00926.35
8.1.250.0120.00628.09
8.1.240.0060.00623.94
8.1.230.0070.00719.09
8.1.220.0040.00717.74
8.1.210.0070.00418.77
8.1.200.0060.00617.48
8.1.190.0030.00817.38
8.1.180.0060.00618.10
8.1.170.0030.00918.75
8.1.160.0000.01022.21
8.1.150.0000.01118.85
8.1.140.0000.01017.65
8.1.130.0030.00617.81
8.1.120.0030.00717.72
8.1.110.0030.01317.74
8.1.100.0030.00717.78
8.1.90.0070.00317.76
8.1.80.0030.00717.64
8.1.70.0000.01117.66
8.1.60.0060.00617.77
8.1.50.0060.00617.78
8.1.40.0000.01117.82
8.1.30.0000.01117.90
8.1.20.0080.00417.91
8.1.10.0040.00717.82
8.1.00.0090.00317.59
8.0.300.0030.00718.77
8.0.290.0000.01017.18
8.0.280.0070.00318.67
8.0.270.0030.00717.09
8.0.260.0030.00617.35
8.0.250.0030.00717.32
8.0.240.0090.00017.29
8.0.230.0030.00717.33
8.0.220.0070.00417.28
8.0.210.0050.00517.15
8.0.200.0000.00917.34
8.0.190.0030.00717.29
8.0.180.0000.01117.21
8.0.170.0030.00917.18
8.0.160.0030.00717.25
8.0.150.0030.00717.24
8.0.140.0030.00717.21
8.0.130.0000.01013.76
8.0.120.0030.00917.30
8.0.110.0080.00317.14
8.0.100.0050.00517.18
8.0.90.0000.01117.23
8.0.80.0120.00817.14
8.0.70.0000.01117.31
8.0.60.0030.00717.08
8.0.50.0000.01117.19
8.0.30.0140.01617.32
8.0.20.0100.01817.54
8.0.10.0070.00317.11
8.0.00.0110.01416.88
7.4.330.0030.00615.04
7.4.320.0030.00616.82
7.4.300.0030.00616.90
7.4.290.0030.00716.92
7.4.280.0030.00816.84
7.4.270.0000.01016.91
7.4.260.0040.00716.82
7.4.250.0000.01016.85
7.4.240.0010.00916.85
7.4.230.0070.00316.92
7.4.220.0120.01216.79
7.4.210.0070.01416.90
7.4.200.0050.00517.03
7.4.190.0070.00316.96
7.4.160.0100.01016.76
7.4.150.0040.01917.40
7.4.140.0100.01517.86
7.4.130.0070.01517.00
7.4.120.0120.01516.76
7.4.110.0090.01216.80
7.4.100.0150.01516.53
7.4.90.0160.00716.79
7.4.80.0120.01219.39
7.4.70.0030.01716.75
7.4.60.0060.01616.73
7.4.50.0030.00916.72
7.4.40.0060.01222.77
7.4.30.0040.01716.56
7.4.00.0030.01815.01
7.3.330.0000.00913.49
7.3.320.0030.00713.22
7.3.310.0040.00716.70
7.3.300.0030.00616.42
7.3.290.0080.01116.54
7.3.280.0080.01516.53
7.3.270.0060.02017.40
7.3.260.0120.00916.66
7.3.250.0080.01816.69
7.3.240.0080.02416.81
7.3.230.0060.01616.71
7.3.210.0030.02516.72
7.3.200.0070.01719.39
7.3.190.0060.01616.76
7.3.180.0060.01516.78
7.3.170.0140.01116.76
7.3.160.0110.01816.60
7.3.120.0000.02014.89
7.3.10.0030.00817.07
7.3.00.0000.01916.80
7.2.330.0060.01616.79
7.2.320.0120.01216.85
7.2.310.0060.01616.78
7.2.300.0130.01616.80
7.2.290.0030.02016.77
7.2.130.0040.01517.07
7.2.120.0090.01317.13
7.2.110.0000.01417.18
7.2.100.0070.01117.19
7.2.90.0060.00917.16
7.2.80.0040.01016.89
7.2.70.0110.00716.80
7.2.60.0050.01217.01
7.2.50.0080.00816.85
7.2.40.0080.00417.30
7.2.30.0000.01717.22
7.2.20.0030.01617.14
7.2.10.0030.01416.90
7.2.00.0060.01418.37
7.1.250.0030.00915.67
7.1.200.0060.01215.74
7.1.100.0000.01718.58
7.1.70.0030.01217.29
7.1.60.0070.01117.51
7.1.50.0070.01017.14
7.1.40.0040.01616.87
7.1.30.0070.01417.02
7.1.20.0080.01216.98
7.1.10.0060.01016.80
7.1.00.0040.00717.14
7.0.200.0070.00516.91
7.0.190.0000.01816.88
7.0.180.0040.02116.53
7.0.170.0090.00916.36
7.0.160.0000.01916.48
7.0.150.0060.00916.50
7.0.140.0030.01016.35
7.0.130.0090.00516.70
7.0.120.0000.01317.05
7.0.110.0070.00716.47
7.0.100.0070.00716.69
7.0.90.0060.00916.61
7.0.80.0030.00916.57
7.0.70.0000.01316.51
7.0.60.0000.01216.64
7.0.50.0040.01216.77
7.0.40.0090.01715.14
7.0.30.0080.01415.14
7.0.20.0030.00715.14
7.0.10.0030.00815.14
7.0.00.0000.01115.14
5.6.300.0060.06020.67
5.6.290.0070.06020.67
5.6.280.0070.06220.86
5.6.270.0000.06020.98
5.6.260.0030.06920.90
5.6.250.0030.05420.85
5.6.240.0000.06020.86
5.6.230.0230.06021.00
5.6.220.0000.06520.95
5.6.210.0100.04721.12
5.6.200.0100.04920.82
5.6.190.0130.06920.81
5.6.180.0070.06020.86
5.6.170.0030.06521.02
5.6.160.0070.05621.04
5.6.150.0030.05920.76
5.6.140.0170.07820.82
5.6.130.0100.05821.03
5.6.120.0190.05220.92
5.6.110.0030.05920.98
5.6.100.0070.05620.81
5.6.90.0100.04620.93
5.6.80.0030.05820.39
5.6.70.0070.05620.32
5.6.60.0100.04920.30
5.6.50.0030.05720.27
5.6.40.0000.06320.33
5.6.30.0030.06520.29
5.6.20.0030.05320.38
5.6.10.0030.05220.30
5.6.00.0030.05620.15
5.5.380.0330.04417.58
5.5.370.0070.05817.58
5.5.360.0130.04517.55
5.5.350.0000.07417.45
5.5.340.0230.05718.08
5.5.330.0000.06317.79
5.5.320.0030.05417.96
5.5.310.0070.05318.01
5.5.300.0100.05518.04
5.5.290.0000.06317.73
5.5.280.0030.05617.97
5.5.270.0030.06217.99
5.5.260.0030.06417.85
5.5.250.0000.07217.82
5.5.240.0100.04317.49
5.5.230.0030.06217.27
5.5.220.0030.05717.44
5.5.210.0060.04817.44
5.5.200.0030.05817.49
5.5.190.0030.05517.32
5.5.180.0070.05017.42
5.5.160.0000.05517.43
5.5.150.0000.07117.43
5.5.140.0000.05817.12
5.5.130.0070.06717.32
5.5.120.0000.05717.12
5.5.110.0060.05517.41
5.5.100.0060.07117.22
5.5.90.0030.06417.11
5.5.80.0060.05517.30
5.5.70.0070.09717.11
5.5.60.0070.04917.28
5.5.50.0000.05517.25
5.5.40.0030.05517.11
5.5.30.0300.05617.29
5.5.20.0240.05117.28
5.5.10.0030.05417.29
5.5.00.0070.04717.19
5.4.450.0030.05119.43
5.4.440.0230.04619.41
5.4.430.0000.05819.33
5.4.420.0070.05519.32
5.4.410.0030.05519.30
5.4.400.0030.05219.09
5.4.390.0170.05119.17
5.4.380.0060.04819.10
5.4.370.0030.05518.85
5.4.360.0030.05019.07
5.4.350.0000.05819.02
5.4.340.0030.04918.94
5.4.320.0100.09319.01
5.4.310.0000.05219.16
5.4.300.0000.05419.13
5.4.290.0030.05019.16
5.4.280.0060.07119.11
5.4.270.0070.05018.94
5.4.260.0000.06219.02
5.4.250.0030.05118.84
5.4.240.0030.05119.02
5.4.230.0060.04519.16
5.4.220.0030.07319.07
5.4.210.0030.05419.01
5.4.200.0100.04319.16
5.4.190.0030.05119.18
5.4.180.0030.05518.99
5.4.170.0000.05319.15
5.4.160.0030.04819.09
5.4.150.0290.04619.05
5.4.140.0030.08716.63
5.4.130.0000.05816.54
5.4.120.0100.04716.65
5.4.110.0030.05316.57
5.4.100.0070.04616.58
5.4.90.0000.05516.76
5.4.80.0030.05316.52
5.4.70.0100.04316.70
5.4.60.0030.04916.62
5.4.50.0000.05816.56
5.4.40.0030.05416.63
5.4.30.0030.04916.61
5.4.20.0000.06616.61
5.4.10.0030.05016.41
5.4.00.0000.05615.79
5.3.290.0030.06315.14
5.3.280.0000.05715.14
5.3.270.0000.05215.14
5.3.260.0000.06015.14
5.3.250.0030.05215.14
5.3.240.0060.05115.14
5.3.230.0030.05615.14
5.3.220.0030.05115.14
5.3.210.0000.05815.14
5.3.200.0030.08415.14
5.3.190.0030.05215.14
5.3.180.0030.05815.14
5.3.170.0000.05015.14
5.3.160.0000.05415.14
5.3.150.0000.05115.14
5.3.140.0030.05315.14
5.3.130.0030.06815.14
5.3.120.0030.05315.14
5.3.110.0030.05015.14
5.3.100.0160.04915.14
5.3.90.0030.05015.14
5.3.80.0030.04915.14
5.3.70.0070.04715.14
5.3.60.0030.03615.14
5.3.50.0060.03915.14
5.3.40.0030.03615.14
5.3.30.0060.03215.14
5.3.20.0060.03215.14
5.3.10.0000.04015.14
5.3.00.0070.04615.14
5.2.170.0030.03215.14
5.2.160.0000.04315.14
5.2.150.0140.03415.14
5.2.140.0000.03115.14
5.2.130.0040.02815.14
5.2.120.0030.02915.14
5.2.110.0100.02715.14
5.2.100.0070.03115.14
5.2.90.0100.02915.14
5.2.80.0030.04115.14
5.2.70.0100.03015.14
5.2.60.0030.03215.14
5.2.50.0070.03015.14
5.2.40.0070.03015.14
5.2.30.0030.03118.59
5.2.20.0100.02718.73
5.2.10.0000.03415.14
5.2.00.0000.03815.14
5.1.60.0000.07615.14
5.1.50.0000.05615.14
5.1.40.0300.06715.14
5.1.30.0030.06515.14
5.1.20.0030.05715.14
5.1.10.0000.07015.14
5.1.00.0000.07815.14
5.0.50.0030.05215.14
5.0.40.0000.06915.14
5.0.30.0030.05715.14
5.0.20.0030.05915.14
5.0.10.0000.05915.14
5.0.00.0000.07315.14
4.4.90.0000.04715.14
4.4.80.0070.01315.14
4.4.70.0070.01415.14
4.4.60.0000.01915.14
4.4.50.0030.04615.14
4.4.40.0160.05515.14
4.4.30.0000.05215.14
4.4.20.0000.05715.14
4.4.10.0060.04715.14
4.4.00.0000.05615.14
4.3.110.0000.04515.14
4.3.100.0030.04215.14
4.3.90.0000.04515.14
4.3.80.0170.05315.14
4.3.70.0030.04515.14
4.3.60.0000.05915.14
4.3.50.0000.05315.14
4.3.40.0000.05415.14
4.3.30.0000.01815.14
4.3.20.0030.01515.14
4.3.10.0000.01915.14
4.3.00.0000.01915.14

preferences:
41.87 ms | 401 KiB | 5 Q