3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '/(((?!a).)*)*a\\{/'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".ereg_replace($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)
8.3.60.0070.01316.50
8.3.50.0120.00922.05
8.3.40.0070.01118.65
8.3.30.0100.00719.00
8.3.20.0000.00720.30
8.3.10.0040.00423.52
8.3.00.0030.00619.38
8.2.180.0110.00418.29
8.2.170.0100.01022.96
8.2.160.0130.00620.48
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0000.00726.16
8.2.120.0080.00022.38
8.2.110.0060.00321.18
8.2.100.0040.01217.62
8.2.90.0040.00419.05
8.2.80.0060.00317.97
8.2.70.0000.00817.50
8.2.60.0040.00417.80
8.2.50.0000.00818.10
8.2.40.0000.00718.09
8.2.30.0070.00018.00
8.2.20.0040.00417.66
8.2.10.0040.00418.11
8.2.00.0080.00017.74
8.1.280.0080.00825.92
8.1.270.0080.00023.91
8.1.260.0080.00026.35
8.1.250.0050.00228.09
8.1.240.0030.00622.73
8.1.230.0080.00417.83
8.1.220.0040.00417.79
8.1.210.0080.00018.77
8.1.200.0060.00317.35
8.1.190.0040.00417.34
8.1.180.0000.00818.10
8.1.170.0040.00418.51
8.1.160.0080.00022.02
8.1.150.0060.00318.55
8.1.140.0000.00717.34
8.1.130.0000.00717.73
8.1.120.0000.00717.40
8.1.110.0040.00417.37
8.1.100.0040.00417.31
8.1.90.0050.00317.38
8.1.80.0000.00717.43
8.1.70.0030.00317.32
8.1.60.0000.00917.43
8.1.50.0030.00517.52
8.1.40.0030.00517.50
8.1.30.0040.00417.50
8.1.20.0000.00717.68
8.1.10.0040.00717.57
8.1.00.0040.00417.47
8.0.300.0040.00418.77
8.0.290.0040.00716.63
8.0.280.0030.00518.38
8.0.270.0030.00317.23
8.0.260.0030.00317.15
8.0.250.0030.00316.95
8.0.240.0000.00716.88
8.0.230.0000.00716.83
8.0.220.0030.00516.93
8.0.210.0000.00716.82
8.0.200.0060.00016.95
8.0.190.0040.00416.95
8.0.180.0030.00516.91
8.0.170.0000.00816.82
8.0.160.0040.00416.89
8.0.150.0040.00416.81
8.0.140.0030.00316.86
8.0.130.0000.00513.34
8.0.120.0020.00516.74
8.0.110.0040.00416.72
8.0.100.0050.00316.75
8.0.90.0070.00016.85
8.0.80.0080.00616.88
8.0.70.0000.00716.81
8.0.60.0030.00516.75
8.0.50.0000.00716.77
8.0.30.0090.01016.94
8.0.20.0100.00917.40
8.0.10.0040.00416.88
8.0.00.0130.00716.77
7.4.330.0050.00015.03
7.4.320.0060.00016.45
7.4.300.0040.00416.50
7.4.290.0030.00316.43
7.4.280.0000.00816.34
7.4.270.0070.00016.50
7.4.260.0070.00016.60
7.4.250.0030.00316.51
7.4.240.0020.00516.61
7.4.230.0070.00016.61
7.4.220.0120.01216.63
7.4.210.0080.00816.52
7.4.200.0030.00316.29
7.4.190.0000.00816.66
7.4.160.0000.01516.69
7.4.150.0060.01217.40
7.4.140.0120.00917.86
7.4.130.0110.00616.44
7.4.120.0080.01116.52
7.4.110.0150.00416.56
7.4.100.0150.00416.59
7.4.90.0100.00716.65
7.4.80.0090.00919.39
7.4.70.0110.00616.48
7.4.60.0100.00716.61
7.4.50.0050.00316.11
7.4.40.0060.01022.77
7.4.30.0030.01316.59
7.4.00.0100.00615.07
7.3.330.0030.00313.19
7.3.320.0030.00313.14
7.3.310.0070.00016.10
7.3.300.0030.00316.23
7.3.290.0110.00416.23
7.3.280.0100.00916.29
7.3.270.0130.00617.40
7.3.260.0060.01116.43
7.3.250.0150.00516.29
7.3.240.0100.01016.25
7.3.230.0080.01416.47
7.3.210.0070.01716.30
7.3.200.0110.01219.39
7.3.190.0070.01316.13
7.3.180.0110.00416.28
7.3.170.0060.00916.46
7.3.160.0140.00716.25
7.3.120.0030.01314.86
7.3.10.0070.00716.41
7.3.00.0000.01216.09
7.2.330.0100.00616.47
7.2.320.0070.01016.16
7.2.310.0150.00416.21
7.2.300.0100.00716.51
7.2.290.0070.01016.39
7.2.130.0030.01016.48
7.2.120.0060.00616.80
7.2.110.0060.01116.68
7.2.100.0000.01216.59
7.2.90.0090.00316.83
7.2.80.0080.00416.91
7.2.70.0070.00716.79
7.2.60.0030.00816.85
7.2.50.0050.00516.65
7.2.40.0090.00616.90
7.2.30.0030.01016.98
7.2.20.0070.01016.76
7.2.10.0070.00716.93
7.2.00.0030.01416.46
7.1.250.0030.00915.47
7.1.200.0070.00715.44
7.1.70.0050.00316.98
7.1.60.0090.01519.33
7.1.50.0070.01316.90
7.1.00.0030.07722.40
7.0.200.0430.00914.39
7.0.140.0000.07722.08
7.0.60.0100.07019.95
7.0.50.0000.04317.66
7.0.40.0230.06320.35
7.0.30.0530.06720.18
7.0.20.0200.05320.00
7.0.10.0100.04020.14
7.0.00.0070.03720.16
5.6.280.0000.07720.76
5.6.210.0030.04720.62
5.6.200.0130.07318.17
5.6.190.0030.06320.41
5.6.180.0470.07320.61
5.6.170.0230.08020.33
5.6.160.0000.05020.48
5.6.150.0000.07318.23
5.6.140.0100.04718.09
5.6.130.0070.08718.17
5.6.120.0100.08321.00
5.6.110.0030.08721.08
5.6.100.0030.04320.97
5.6.90.0030.04020.97
5.6.80.0070.08320.38
5.5.350.0100.08020.43
5.5.340.0030.04717.95
5.5.330.0100.05320.57
5.5.320.0100.03720.32
5.5.310.0170.04720.34
5.5.300.0070.08017.91
5.5.290.0100.07717.97
5.5.280.0070.07020.68
5.5.270.0130.07720.96
5.5.260.0130.07720.88
5.5.250.0070.08320.46
5.5.240.0170.08020.23
5.4.450.3700.04319.43
5.4.440.4230.04019.38
5.4.430.3470.03719.25
5.4.420.3170.03719.54
5.4.410.3570.04319.43
5.4.400.3600.03319.22
5.4.390.4270.03719.24
5.4.380.3700.03319.08
5.4.370.3870.03019.13
5.4.360.3600.03719.21
5.4.350.3870.03718.81
5.4.340.3700.04019.10
5.4.320.4300.04019.13
5.4.310.4300.04019.13
5.4.300.4370.03319.22
5.4.290.4270.03318.80
5.4.280.4330.03318.93
5.4.270.4070.03718.93
5.4.260.3370.03319.23
5.4.250.3600.03719.12
5.4.240.3700.02719.24
5.4.230.2870.04019.09
5.4.220.2930.04319.23
5.4.210.3870.03719.13
5.4.200.4630.04019.25
5.4.190.3330.03719.12
5.4.180.3770.03719.08
5.4.170.3530.03318.91
5.4.160.3430.02719.06
5.4.150.3600.04019.20
5.4.140.3430.03316.21
5.4.130.3600.03716.49
5.4.120.3600.03316.59
5.4.110.3370.03716.43
5.4.100.5030.04016.48
5.4.90.4000.03316.11
5.4.80.4030.03016.26
5.4.70.4400.03016.51
5.4.60.4000.03016.36
5.4.50.3430.04016.41
5.4.40.3970.03716.04
5.4.30.3670.03016.46
5.4.20.3400.04016.36
5.4.10.4700.03316.36
5.4.00.3800.03715.70
5.3.290.4270.03014.52
5.3.280.0000.04714.52
5.3.270.3330.03714.63
5.3.260.3730.04014.43
5.3.250.3800.04014.55
5.3.240.3200.04314.47
5.3.230.3670.03714.54
5.3.220.3430.03714.40
5.3.210.3700.04714.42
5.3.200.3500.03714.40
5.3.190.3770.03014.54
5.3.180.3870.03714.41
5.3.170.4170.03714.41
5.3.160.3630.03714.41
5.3.150.3570.03314.51
5.3.140.3700.03714.40
5.3.130.3600.04014.41
5.3.120.3830.02314.59
5.3.110.4100.04014.48
5.3.100.3570.03013.98
5.3.90.3530.02713.88
5.3.80.3530.02713.95
5.3.70.3500.02713.86
5.3.60.3470.03713.93
5.3.50.3470.03314.01
5.3.40.2730.03713.74
5.3.30.2300.04013.95
5.3.20.2270.03313.52
5.3.10.2870.03713.61
5.3.00.2770.03313.66
5.2.170.2900.02311.19
5.2.160.3130.02311.16
5.2.150.2130.02711.09
5.2.140.2100.03011.15
5.2.130.2170.03010.96
5.2.120.2130.03311.15
5.2.110.3230.03311.19
5.2.100.2870.02711.12
5.2.90.3070.02710.98
5.2.80.2830.03011.10
5.2.70.2800.02711.24
5.2.60.2270.02710.89
5.2.50.3070.02710.92
5.2.40.2300.02711.06
5.2.30.2870.03011.01
5.2.20.2700.02710.84
5.2.10.2500.02310.75
5.2.00.2500.02710.71
5.1.60.2500.0239.88
5.1.50.2530.0309.91
5.1.40.2500.02010.04
5.1.30.2700.03310.23
5.1.20.2430.02710.29
5.1.10.2470.02710.11
5.1.00.2500.0309.95
5.0.50.1230.0238.48
5.0.40.1300.0138.30
5.0.30.1200.0338.20
5.0.20.1230.0208.42
5.0.10.1130.0208.09
5.0.00.0930.0278.08
4.4.90.1300.0106.07
4.4.80.1300.0136.07
4.4.70.1130.0136.07
4.4.60.1430.0206.07
4.4.50.1470.0176.07
4.4.40.1330.0236.07
4.4.30.1370.0176.07
4.4.20.1200.0176.07
4.4.10.1130.0176.07
4.4.00.1200.0276.07
4.3.110.1230.0176.07
4.3.100.1200.0176.07
4.3.90.1230.0176.07
4.3.80.1230.0236.07
4.3.70.1200.0136.07
4.3.60.1330.0106.07
4.3.50.1370.0176.07
4.3.40.1630.0276.07
4.3.30.0730.0236.07
4.3.20.0630.0176.07
4.3.10.0730.0236.07
4.3.00.0770.0206.07

preferences:
33.17 ms | 401 KiB | 5 Q