3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '[^a]*a\\{'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".mb_ereg_replace('/'.$regex.'/i','WORKED',$test_string)."\n"; echo "2:".preg_replace('/'.$regex.'/ui','WORKED',$test_string)."\n"; echo "3:".preg_replace('/'.$regex.'/i','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)
8.3.60.0140.00016.84
8.3.50.0130.00822.33
8.3.40.0120.00918.85
8.3.30.0070.00719.24
8.3.20.0000.00820.51
8.3.10.0060.00323.70
8.3.00.0110.00019.47
8.2.180.0090.00918.69
8.2.170.0070.00722.96
8.2.160.0110.00420.38
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0060.00926.16
8.2.120.0050.00322.33
8.2.110.0080.00022.33
8.2.100.0090.00317.97
8.2.90.0000.00719.30
8.2.80.0030.00617.97
8.2.70.0050.00517.88
8.2.60.0030.00518.05
8.2.50.0040.00418.07
8.2.40.0040.00418.22
8.2.30.0050.00218.29
8.2.20.0000.00818.04
8.2.10.0000.00818.12
8.2.00.0070.00418.02
8.1.280.0150.00025.92
8.1.270.0030.00522.26
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0080.00023.96
8.1.230.0080.00419.21
8.1.220.0000.00817.79
8.1.210.0050.00318.77
8.1.200.0040.00417.60
8.1.190.0040.00417.53
8.1.180.0000.00818.10
8.1.170.0000.00818.91
8.1.160.0080.00022.14
8.1.150.0050.00318.88
8.1.140.0040.00417.79
8.1.130.0050.00318.04
8.1.120.0070.00017.78
8.1.110.0070.00017.75
8.1.100.0050.00317.66
8.1.90.0040.00417.70
8.1.80.0000.00817.73
8.1.70.0030.00317.69
8.1.60.0030.00517.83
8.1.50.0050.00317.82
8.1.40.0040.00417.80
8.1.30.0040.00417.74
8.1.20.0040.00417.97
8.1.10.0080.00017.74
8.1.00.0080.00017.76
8.0.300.0070.00018.77
8.0.290.0000.00717.28
8.0.280.0030.00318.52
8.0.270.0000.00717.41
8.0.260.0060.00017.43
8.0.250.0070.00017.23
8.0.240.0040.00417.29
8.0.230.0030.00317.36
8.0.220.0000.00617.29
8.0.210.0000.00717.28
8.0.200.0000.00717.34
8.0.190.0040.00417.33
8.0.180.0080.00017.14
8.0.170.0000.00817.28
8.0.160.0040.00417.13
8.0.150.0040.00417.17
8.0.140.0070.00017.19
8.0.130.0000.00613.70
8.0.120.0060.00317.27
8.0.110.0040.00417.17
8.0.100.0040.00417.20
8.0.90.0040.00417.11
8.0.80.0070.00717.28
8.0.70.0000.00817.08
8.0.60.0050.00217.13
8.0.50.0040.00417.16
8.0.30.0120.00817.41
8.0.20.0120.00717.51
8.0.10.0040.00417.24
8.0.00.0050.01417.02
7.4.330.0020.00215.12
7.4.320.0030.00316.90
7.4.300.0000.00616.91
7.4.290.0030.00316.88
7.4.280.0080.00416.94
7.4.270.0000.00716.85
7.4.260.0040.00416.95
7.4.250.0050.00316.90
7.4.240.0060.00116.93
7.4.230.0040.00416.84
7.4.220.0140.00516.88
7.4.210.0110.00716.97
7.4.200.0070.00016.97
7.4.190.0040.00416.95
7.4.160.0090.00616.82
7.4.150.0060.01217.40
7.4.140.0080.01117.86
7.4.130.0070.01016.79
7.4.120.0090.01216.80
7.4.110.0030.01416.88
7.4.100.0170.00616.92
7.4.90.0100.00716.58
7.4.80.0090.00919.39
7.4.70.0070.01416.70
7.4.60.0130.00317.00
7.4.50.0030.00316.59
7.4.40.0090.00322.77
7.4.30.0070.01016.71
7.4.00.0070.01115.26
7.3.330.0050.00013.43
7.3.320.0030.00313.39
7.3.310.0030.00516.59
7.3.300.0000.00716.60
7.3.290.0100.00316.55
7.3.280.0090.00816.51
7.3.270.0100.00717.40
7.3.260.0040.01316.77
7.3.250.0160.00616.66
7.3.240.0130.00916.50
7.3.230.0150.00316.76
7.3.210.0130.00316.66
7.3.200.0070.01019.39
7.3.190.0040.01416.64
7.3.180.0090.00616.55
7.3.170.0120.00416.60
7.3.160.0040.01316.53
7.3.120.0070.01015.02
7.3.10.0190.00516.43
7.3.00.0210.00016.60
7.2.330.0130.00516.76
7.2.320.0110.00816.82
7.2.310.0130.01016.56
7.2.300.0080.00816.69
7.2.290.0140.00416.88
7.2.130.0150.00916.39
7.2.120.0140.01016.58
7.2.110.0180.00716.67
7.2.100.0270.00316.70
7.2.90.0120.00816.65
7.2.80.0160.00616.53
7.2.70.0150.01116.73
7.2.60.0100.00716.88
7.2.50.0140.00816.67
7.2.40.0130.01016.71
7.2.30.0230.00016.66
7.2.20.0130.00716.96
7.2.10.0100.01316.39
7.2.00.0130.00517.00
7.1.250.0150.00715.59
7.1.200.0030.01015.95
7.1.70.0040.00817.37
7.1.60.0070.01419.46
7.1.50.0130.00717.30
7.1.00.0000.08022.45
7.0.200.0060.00616.87
7.0.140.0070.07021.98
7.0.60.0000.08319.92
7.0.50.0200.05017.84
7.0.40.0070.05320.25
7.0.30.0330.06020.14
7.0.20.0330.07320.13
7.0.10.0030.04720.10
7.0.00.0100.06720.26
5.6.280.0070.06721.13
5.6.210.0100.08720.67
5.6.200.0100.06318.09
5.6.190.0000.04720.61
5.6.180.0270.08720.43
5.6.170.0300.07020.50
5.6.160.0070.06720.52
5.6.150.0030.07318.19
5.6.140.0130.07318.21
5.6.130.0070.08718.11
5.6.120.0000.09321.05
5.6.110.0100.08320.93
5.6.100.0030.08021.00
5.6.90.0130.07320.88
5.6.80.0170.07020.28
5.6.70.4530.04020.38
5.5.350.0170.06720.32
5.5.340.0070.08318.02
5.5.330.0070.04020.37
5.5.320.0230.08020.31
5.5.310.0270.06320.33
5.5.300.0100.07717.91
5.5.290.0100.06017.92
5.5.280.0030.05020.64
5.5.270.0130.06320.75
5.5.260.0070.08720.67
5.5.250.0130.07320.58
5.5.240.0200.05020.16
5.4.450.0230.07019.25
5.4.440.0330.06319.50
5.4.430.0230.06719.26
5.4.420.0230.06719.25
5.4.410.0200.07719.00
5.4.400.0170.06019.23
5.4.390.0270.04319.08
5.4.380.0270.04719.13
5.4.370.0300.06019.14
5.4.360.0270.07019.16
5.4.350.0270.07319.07
5.4.340.0270.06318.91
5.4.320.0230.08018.92
5.4.310.0270.06319.21
5.4.300.0230.06719.06
5.4.290.0230.07019.23
5.4.280.0330.06318.79
5.4.270.0200.04018.79
5.4.260.0270.03719.13
5.4.250.0230.04318.91
5.4.240.0300.07019.13
5.4.230.0300.04319.14
5.4.220.0300.06319.09
5.4.210.0330.05319.21
5.4.200.0170.04319.15
5.4.190.0200.08019.14
5.4.180.0330.06319.15
5.4.170.0230.03318.91
5.4.160.0270.04319.11
5.4.150.0230.06718.86
5.4.140.0170.05316.31
5.4.130.0300.05716.50
5.4.120.0270.07016.25
5.4.110.0230.07016.25
5.4.100.0270.04716.52
5.4.90.0370.05716.27
5.4.80.0170.05316.46
5.4.70.0200.07016.44
5.4.60.0230.06316.20
5.4.50.0170.06316.04
5.4.40.0270.05716.20
5.4.30.0230.04016.42
5.4.20.0200.04316.36
5.4.10.0170.04016.36
5.4.00.0230.04015.90
5.3.290.0230.07014.62
5.3.280.0270.07314.47
5.3.270.0200.04014.45
5.3.260.0270.07314.45
5.3.250.0230.05714.51
5.3.240.0170.04314.71
5.3.230.0230.06314.54
5.3.220.0170.07314.55
5.3.210.0270.03714.41
5.3.200.0300.06314.39
5.3.190.0270.06714.54
5.3.180.0130.07714.40
5.3.170.0230.07314.46
5.3.160.0170.04714.42
5.3.150.0200.03314.59
5.3.140.0200.06314.39
5.3.130.0230.07014.49
5.3.120.0230.04714.50
5.3.110.0170.06014.38
5.3.100.0170.07013.98
5.3.90.0230.03313.86
5.3.80.0170.06714.11
5.3.70.0270.04713.96
5.3.60.0230.04013.88
5.3.50.0230.03013.74
5.3.40.0330.06713.78
5.3.30.0200.04313.74
5.3.20.0200.03713.67
5.3.10.0200.04013.63
5.3.00.0230.06713.68
5.2.170.0130.04012.29
5.2.160.0170.02712.29
5.2.150.0170.03312.29
5.2.140.0130.03012.29
5.2.130.0200.05712.29
5.2.120.0100.05312.29
5.2.110.0200.04012.29
5.2.100.0200.06012.29
5.2.90.0230.03712.29
5.2.80.0170.04712.29
5.2.70.0270.03312.29
5.2.60.0230.05012.29
5.2.50.0200.06312.29
5.2.40.0230.05712.29
5.2.30.0200.06012.29
5.2.20.0130.06012.29
5.2.10.0200.04712.29
5.2.00.0270.04012.29
5.1.60.0170.04712.29
5.1.50.0230.04312.29
5.1.40.0130.05312.29
5.1.30.0100.04312.29
5.1.20.0170.05012.29
5.1.10.0170.05012.29
5.1.00.0200.04712.29
5.0.50.0070.04312.29
5.0.40.0100.03712.29
5.0.30.0170.05712.29
5.0.20.0100.02712.29
5.0.10.0070.03012.29
5.0.00.0070.06712.29
4.4.90.0070.03712.29
4.4.80.0070.02312.29
4.4.70.0070.03712.29
4.4.60.0000.02312.29
4.4.50.0100.03712.29
4.4.40.0070.05712.29
4.4.30.0100.03012.29
4.4.20.0100.03012.29
4.4.10.0070.03312.29
4.4.00.0100.04312.29
4.3.110.0070.04012.29
4.3.100.0100.02312.29
4.3.90.0070.02012.29
4.3.80.0200.03712.29
4.3.70.0100.03312.29
4.3.60.0070.03012.29
4.3.50.0100.02312.29
4.3.40.0070.05312.29
4.3.30.0070.03312.29
4.3.20.0100.02312.29
4.3.10.0030.03712.29
4.3.00.0070.03312.29

preferences:
39.76 ms | 401 KiB | 5 Q