3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(preg_match('/(?<=a)b/', 'ab'));

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)
8.3.40.0120.00318.72
8.3.30.0140.00719.07
8.3.20.0000.00820.37
8.3.10.0000.00820.61
8.3.00.0080.00019.26
8.2.170.0060.00822.96
8.2.160.0110.00420.52
8.2.150.0090.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0080.00021.21
8.2.110.0030.00622.39
8.2.100.0070.00717.91
8.2.90.0040.00418.95
8.2.80.0040.00417.97
8.2.70.0000.00817.75
8.2.60.0060.00317.80
8.2.50.0030.00618.07
8.2.40.0000.00718.09
8.2.30.0000.00819.38
8.2.20.0050.00317.71
8.2.10.0080.00017.96
8.2.00.0050.00217.63
8.1.270.0000.00821.91
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.90
8.1.230.0070.00419.16
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0030.00517.23
8.1.180.0040.00418.10
8.1.170.0080.00018.54
8.1.160.0000.00721.89
8.1.150.0040.00418.86
8.1.140.0040.00417.48
8.1.130.0050.00217.70
8.1.120.0070.00017.52
8.1.110.0000.00717.42
8.1.100.0000.00817.33
8.1.90.0000.00717.48
8.1.80.0000.00717.50
8.1.70.0000.00717.43
8.1.60.0040.00417.57
8.1.50.0040.00417.47
8.1.40.0040.00417.59
8.1.30.0040.00417.68
8.1.20.0070.00017.70
8.1.10.0000.00717.54
8.1.00.0040.00417.30
8.0.300.0000.00718.77
8.0.290.0030.00616.63
8.0.280.0070.00018.23
8.0.270.0050.00217.00
8.0.260.0000.00617.20
8.0.250.0030.00316.85
8.0.240.0030.00316.87
8.0.230.0030.00316.94
8.0.220.0030.00516.92
8.0.210.0030.00316.92
8.0.200.0030.00616.95
8.0.190.0040.00416.89
8.0.180.0070.00016.94
8.0.170.0040.00416.93
8.0.160.0030.00316.95
8.0.150.0080.00016.79
8.0.140.0000.00816.84
8.0.130.0060.00013.36
8.0.120.0050.00316.82
8.0.110.0070.00016.88
8.0.100.0070.00016.98
8.0.90.0000.00716.90
8.0.80.0110.00416.95
8.0.70.0000.00816.79
8.0.60.0040.00416.88
8.0.50.0050.00216.95
8.0.30.0060.01517.15
8.0.20.0170.00217.40
8.0.10.0070.00016.93
8.0.00.0130.00716.79
7.4.330.0000.00515.00
7.4.320.0080.00016.49
7.4.300.0070.00016.60
7.4.290.0000.00716.45
7.4.280.0000.00816.58
7.4.270.0030.00316.68
7.4.260.0040.00416.57
7.4.250.0040.00416.56
7.4.240.0020.00516.59
7.4.230.0000.00716.59
7.4.220.0120.00916.71
7.4.210.0070.00716.74
7.4.200.0030.00316.73
7.4.160.0120.00316.34
7.4.150.0140.00417.40
7.4.140.0100.00917.86
7.4.130.0120.00516.62
7.4.120.0070.01416.51
7.4.110.0070.01016.55
7.4.100.0030.01416.50
7.4.90.0180.00316.68
7.4.80.0170.00319.39
7.4.70.0080.00816.51
7.4.60.0060.01316.48
7.4.50.0050.00316.59
7.4.40.0060.01016.64
7.4.30.0100.01016.52
7.4.10.0080.01115.74
7.4.00.0070.01215.41
7.3.330.0070.00013.21
7.3.320.0030.00313.16
7.3.310.0000.00716.09
7.3.300.0030.00316.34
7.3.290.0120.00316.24
7.3.280.0120.00716.31
7.3.270.0090.01417.40
7.3.260.0090.01016.52
7.3.250.0140.00416.51
7.3.240.0090.00916.38
7.3.230.0040.01216.47
7.3.210.0020.01516.18
7.3.200.0100.00719.39
7.3.190.0160.00316.46
7.3.180.0090.00916.28
7.3.170.0140.00316.56
7.3.160.0000.01616.40
7.3.130.0080.01015.67
7.3.120.0130.00515.50
7.3.110.0070.01115.42
7.3.100.0070.00815.48
7.3.90.0050.01115.41
7.3.80.0070.00715.40
7.3.70.0100.00615.40
7.3.60.0090.00715.52
7.3.50.0070.01015.54
7.3.40.0100.00515.45
7.3.30.0100.00415.54
7.3.20.0060.00917.44
7.3.10.0100.00317.23
7.3.00.0090.00517.08
7.2.330.0160.00616.73
7.2.320.0070.01116.42
7.2.310.0140.00716.70
7.2.300.0100.01316.63
7.2.290.0080.00916.52
7.2.260.0110.01015.78
7.2.250.0000.02015.84
7.2.240.0080.00715.76
7.2.230.0050.01215.77
7.2.220.0020.01415.75
7.2.210.0070.00915.62
7.2.200.0080.00515.61
7.2.190.0080.00615.67
7.2.180.0050.00915.74
7.2.170.0050.01015.71
7.2.160.0050.01015.78
7.2.150.0080.00817.80
7.2.140.0030.01017.72
7.2.130.0080.00817.48
7.2.120.0100.00517.44
7.2.110.0050.01017.43
7.2.100.0080.00617.43
7.2.90.0070.01017.27
7.2.80.0040.01117.34
7.2.70.0060.00817.16
7.2.60.0060.01117.40
7.2.50.0060.00717.42
7.2.40.0050.00917.37
7.2.30.0090.00717.29
7.2.20.0070.00617.33
7.2.10.0050.00917.43
7.2.00.0120.00417.86
7.1.330.0060.00916.60
7.1.320.0030.01116.69
7.1.310.0060.00616.53
7.1.300.0040.00916.66
7.1.290.0070.00716.53
7.1.280.0030.01116.54
7.1.270.0050.01016.61
7.1.260.0060.00716.56
7.1.250.0060.00716.26
7.1.240.0030.01116.57
7.1.230.0060.00816.62
7.1.220.0110.00416.40
7.1.210.0050.00916.61
7.1.200.0070.00716.51
7.1.190.0070.01116.62
7.1.180.0040.01116.58
7.1.170.0050.00716.63
7.1.160.0030.01116.55
7.1.150.0020.01416.62
7.1.140.0060.00316.61
7.1.130.0070.00716.59
7.1.120.0060.00916.64
7.1.110.0060.00916.62
7.1.100.0050.00817.08
7.1.90.0080.00616.52
7.1.80.0040.00916.53
7.1.70.0040.00916.77
7.1.60.0060.01117.59
7.1.50.0140.01022.58
7.1.40.0110.00516.62
7.1.30.0050.01116.62
7.1.20.0070.00416.62
7.1.10.0070.00916.51
7.1.00.0060.03218.59
7.0.330.0050.00516.17
7.0.320.0020.00916.11
7.0.310.0100.00516.21
7.0.300.0030.01016.21
7.0.290.0080.00616.23
7.0.280.0070.00816.24
7.0.270.0080.00716.22
7.0.260.0040.00816.34
7.0.250.0060.00616.07
7.0.240.0100.00416.36
7.0.230.0060.00716.30
7.0.220.0060.00516.26
7.0.210.0060.00916.19
7.0.200.0090.01015.58
7.0.190.0020.01316.23
7.0.180.0020.01016.30
7.0.170.0050.00816.29
7.0.160.0040.01016.24
7.0.150.0060.00816.32
7.0.140.0080.02818.22
7.0.130.0070.00816.26
7.0.120.0050.00816.37
7.0.110.0080.00816.15
7.0.100.0070.02517.34
7.0.90.0150.03317.51
7.0.80.0070.03117.45
7.0.70.0060.03017.44
7.0.60.0080.03217.36
7.0.50.0030.03417.58
7.0.40.0090.02716.23
7.0.30.0070.03516.21
7.0.20.0070.02916.20
7.0.10.0050.03316.28
7.0.00.0020.03416.13
5.6.400.0050.00915.12
5.6.390.0030.01014.77
5.6.380.0020.01214.99
5.6.370.0090.00815.01
5.6.360.0060.00914.83
5.6.350.0090.00914.94
5.6.340.0080.00815.00
5.6.330.0050.00914.92
5.6.320.0070.00314.88
5.6.310.0070.00914.88
5.6.300.0030.01415.03
5.6.290.0050.01315.02
5.6.280.0040.03217.03
5.6.270.0090.00515.11
5.6.260.0060.00915.11
5.6.250.0070.03216.86
5.6.240.0110.02916.94
5.6.230.0090.03716.83
5.6.220.0090.02816.69
5.6.210.0050.03516.85
5.6.200.0130.01616.95
5.6.190.0070.02417.05
5.6.180.0070.03016.97
5.6.170.0090.03116.97
5.6.160.0110.03016.97
5.6.150.0090.02716.97
5.6.140.0050.03416.95
5.6.130.0060.03316.94
5.6.120.0040.03516.95
5.6.110.0060.03316.99
5.6.100.0040.02016.99
5.6.90.0090.03016.87
5.6.80.0060.03116.77
5.6.70.0090.02716.73
5.6.60.0080.02716.65
5.6.50.0080.01916.88
5.6.40.0040.03416.70
5.6.30.0070.02916.81
5.6.20.0040.03316.74
5.6.10.0060.02116.73
5.6.00.0060.03016.66
5.5.380.0100.03016.72
5.5.370.0060.03516.61
5.5.360.0080.03616.77
5.5.350.0050.03416.60
5.5.340.0070.03216.84
5.5.330.0060.02816.93
5.5.320.0060.03316.76
5.5.310.0070.02016.76
5.5.300.0130.02616.94
5.5.290.0070.03016.72
5.5.280.0020.03616.92
5.5.270.0050.02416.70
5.5.260.0070.02616.74
5.5.250.0070.03016.72
5.5.240.0100.02716.56
5.5.230.0050.03216.57
5.5.220.0060.02716.69
5.5.210.0030.02916.69
5.5.200.0060.03116.61
5.5.190.0110.02816.60
5.5.180.0040.02416.51
5.5.170.0040.00614.62
5.5.160.0050.02816.56
5.5.150.0090.02816.57
5.5.140.0080.01616.66
5.5.130.0090.02616.68
5.5.120.0060.03216.61
5.5.110.0080.02816.52
5.5.100.0070.02116.59
5.5.90.0070.03216.57
5.5.80.0040.02616.57
5.5.70.0130.02616.51
5.5.60.0040.01916.50
5.5.50.0080.03116.46
5.5.40.0060.03016.44
5.5.30.0100.02716.43
5.5.20.0070.02916.38
5.5.10.0050.02916.48
5.5.00.0050.03016.61
5.4.450.0080.02914.26
5.4.440.0040.02214.25
5.4.430.0060.03114.16
5.4.420.0030.03414.23
5.4.410.0060.03014.30
5.4.400.0000.02414.10
5.4.390.0020.02814.18
5.4.380.0080.02014.07
5.4.370.0050.01814.16
5.4.360.0060.02914.15
5.4.350.0040.02514.01
5.4.340.0040.03114.09
5.4.330.0020.00811.68
5.4.320.0060.03114.16
5.4.310.0050.02714.04
5.4.300.0080.02714.15
5.4.290.0090.01514.10
5.4.280.0070.02814.13
5.4.270.0080.03114.13
5.4.260.0050.02914.05
5.4.250.0050.02814.08
5.4.240.0000.03614.17
5.4.230.0010.03214.05
5.4.220.0070.02814.10
5.4.210.0080.01814.01
5.4.200.0040.03114.09
5.4.190.0090.02514.16
5.4.180.0060.01714.08
5.4.170.0100.02714.12
5.4.160.0070.02814.11
5.4.150.0050.02714.20
5.4.140.0020.03113.21
5.4.130.0030.03113.22
5.4.120.0060.02113.14
5.4.110.0040.01913.16
5.4.100.0070.03013.25
5.4.90.0050.02713.20
5.4.80.0050.02713.18
5.4.70.0040.02913.27
5.4.60.0010.02813.27
5.4.50.0060.02813.19
5.4.40.0030.02213.25
5.4.30.0110.01813.15
5.4.20.0070.02413.21
5.4.10.0050.01413.11
5.4.00.0000.01813.04
5.3.290.0130.07015.73
5.3.280.0070.05315.73
5.3.270.0030.08715.73
5.3.260.0130.07015.73
5.3.250.0170.05315.73
5.3.240.0100.07015.73
5.3.230.0170.07315.73
5.3.220.0170.06015.73
5.3.210.0130.04015.73
5.3.200.0070.08315.73
5.3.190.0130.06715.73
5.3.180.0030.08315.73
5.3.170.0030.07015.73
5.3.160.0200.06315.73
5.3.150.0100.07015.73
5.3.140.0030.08015.73
5.3.130.0100.04015.73
5.3.120.0030.06015.73
5.3.110.0000.05015.73
5.3.100.0030.03715.73
5.3.90.0070.03015.73
5.3.80.0030.03715.73
5.3.70.0000.04015.73
5.3.60.0070.03715.73
5.3.50.0000.05315.73
5.3.40.0000.03315.73
5.3.30.0030.03715.73
5.3.20.0030.03315.73
5.3.10.0030.06715.73
5.3.00.0030.06015.73
5.2.170.0030.03015.73
5.2.160.0030.02715.73
5.2.150.0100.03715.73
5.2.140.0000.03015.73
5.2.130.0000.03015.73
5.2.120.0000.03315.73
5.2.110.0030.03015.73
5.2.100.0170.02015.73
5.2.90.0100.05315.73
5.2.80.0000.03315.73
5.2.70.0000.03315.73
5.2.60.0030.04715.73
5.2.50.0030.04315.73
5.2.40.0030.05315.73
5.2.30.0030.06015.73
5.2.20.0130.05015.73
5.2.10.0030.06715.73
5.2.00.0070.03015.73
5.1.60.0070.03315.73
5.1.50.0030.02015.73
5.1.40.0000.02315.73
5.1.30.0000.04015.73
5.1.20.0000.03315.73
5.1.10.0070.03015.73
5.1.00.0000.02715.73
5.0.50.0000.03315.73
5.0.40.0030.01715.73
5.0.30.0030.03315.73
5.0.20.0000.02015.73
5.0.10.0000.02015.73
5.0.00.0000.03715.73
4.4.90.0170.01315.73
4.4.80.0000.01315.73
4.4.70.0000.02315.73
4.4.60.0070.01015.73
4.4.50.0100.02715.73
4.4.40.0070.02715.73
4.4.30.0000.02315.73
4.4.20.0000.01315.73
4.4.10.0000.01315.73
4.4.00.0100.03015.73
4.3.110.0000.03315.73
4.3.100.0000.02315.73
4.3.90.0030.01315.73
4.3.80.0070.02015.73
4.3.70.0030.01715.73
4.3.60.0000.01715.73
4.3.50.0030.01715.73
4.3.40.0070.01715.73
4.3.30.0030.01315.73
4.3.20.0000.02015.73
4.3.10.0030.01015.73
4.3.00.0000.02015.73

preferences:
43.28 ms | 400 KiB | 5 Q