3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "regex!"; echo preg_replace('/\(\d+\)/', '\1\1', "16656400");

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)
8.3.60.0110.00818.43
8.3.50.0100.01222.05
8.3.40.0120.00918.97
8.3.30.0040.01119.08
8.3.20.0040.00420.21
8.3.10.0000.00822.12
8.3.00.0090.00022.40
8.2.180.0120.00316.88
8.2.170.0070.00722.96
8.2.160.0150.00020.95
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0180.00026.16
8.2.120.0080.00017.50
8.2.110.0000.01021.05
8.2.100.0120.00017.78
8.2.90.0000.00817.98
8.2.80.0060.00317.97
8.2.70.0040.00417.91
8.2.60.0040.00417.68
8.2.50.0080.00019.78
8.2.40.0050.00320.57
8.2.30.0040.00418.00
8.2.20.0050.00217.74
8.2.10.0040.00417.59
8.2.00.0070.00417.75
8.1.280.0030.01425.92
8.1.270.0040.00422.20
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00023.93
8.1.230.0080.00321.03
8.1.220.0000.00817.74
8.1.210.0060.00318.82
8.1.200.0030.00517.22
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0000.00918.63
8.1.160.0000.00721.93
8.1.150.0040.00418.70
8.1.140.0060.00317.52
8.1.130.0040.00417.73
8.1.120.0000.00717.37
8.1.110.0040.00417.37
8.1.100.0030.00417.39
8.1.90.0040.00417.49
8.1.80.0000.00717.48
8.1.70.0000.00717.39
8.1.60.0060.00317.62
8.1.50.0040.00417.55
8.1.40.0070.00017.52
8.1.30.0040.00417.63
8.1.20.0000.00817.70
8.1.10.0000.00717.57
8.1.00.0040.00417.54
8.0.300.0070.00019.98
8.0.290.0050.00316.63
8.0.280.0000.00718.44
8.0.270.0000.00717.23
8.0.260.0030.00316.81
8.0.250.0080.00016.95
8.0.240.0080.00016.92
8.0.230.0030.00316.85
8.0.220.0050.00216.95
8.0.210.0000.00716.93
8.0.200.0040.00417.04
8.0.190.0030.00716.83
8.0.180.0000.00816.93
8.0.170.0030.00616.97
8.0.160.0070.00016.85
8.0.150.0050.00316.89
8.0.140.0070.00016.85
8.0.130.0000.00613.30
8.0.120.0040.00416.84
8.0.110.0000.00816.86
8.0.100.0000.00817.02
8.0.90.0020.00516.77
8.0.80.0150.00916.86
8.0.70.0040.00416.71
8.0.60.0000.00716.73
8.0.50.0000.00716.91
8.0.30.0090.00917.21
8.0.20.0110.00917.43
8.0.10.0000.00717.11
8.0.00.0080.00916.70
7.4.330.0060.00015.00
7.4.320.0030.00316.49
7.4.300.0000.00616.47
7.4.290.0020.00516.68
7.4.280.0070.00016.59
7.4.270.0030.00316.48
7.4.260.0040.00416.46
7.4.250.0040.00416.69
7.4.240.0020.00616.63
7.4.230.0000.00716.39
7.4.220.0060.01316.76
7.4.210.0090.00716.64
7.4.200.0040.00316.58
7.4.190.0030.00316.74
7.4.160.0100.01016.54
7.4.150.0090.00917.40
7.4.140.0150.00417.86
7.4.130.0070.01016.58
7.4.120.0100.00716.71
7.4.110.0150.00916.54
7.4.100.0150.00416.71
7.4.90.0060.01216.46
7.4.80.0160.00819.39
7.4.70.0080.00816.77
7.4.60.0060.01116.47
7.4.50.0030.00616.45
7.4.40.0070.00722.77
7.4.30.0110.00716.45
7.4.00.0120.00015.21
7.3.330.0000.00513.18
7.3.320.0000.00512.96
7.3.310.0000.00716.34
7.3.300.0070.00016.28
7.3.290.0040.01116.31
7.3.280.0070.00816.26
7.3.270.0110.00517.40
7.3.260.0060.01216.37
7.3.250.0110.00916.51
7.3.240.0090.00916.23
7.3.230.0140.00716.60
7.3.210.0090.01016.30
7.3.200.0060.01719.39
7.3.190.0090.00916.57
7.3.180.0070.01016.44
7.3.170.0120.00616.31
7.3.160.0100.00616.65
7.3.120.0070.01015.02
7.2.330.0060.01216.48
7.2.320.0170.00816.53
7.2.310.0100.00616.44
7.2.300.0060.00916.63
7.2.290.0030.01416.79
7.2.60.0120.00317.02
7.2.00.0070.01019.56
7.1.200.0080.00415.82
7.1.100.0000.01017.88
7.1.70.0060.00617.23
7.1.60.0060.01919.82
7.1.50.0040.01817.00
7.1.00.0000.08022.46
7.0.200.0030.00516.75
7.0.140.0070.07021.97
7.0.60.0170.07719.81
7.0.50.0100.04317.78
7.0.40.0100.05320.12
7.0.30.0230.06320.11
7.0.20.0370.08020.03
7.0.10.0070.08320.18
7.0.00.0070.04020.01
5.6.280.0030.07321.11
5.6.210.0100.06720.54
5.6.200.0130.06318.18
5.6.190.0070.06720.45
5.6.180.0400.07720.41
5.6.170.0330.07020.41
5.6.160.0030.09320.51
5.6.150.0130.06718.12
5.6.140.0030.08318.14
5.6.130.0130.06318.21
5.6.120.0100.08020.96
5.6.110.0000.04721.11
5.6.100.0070.04720.98
5.6.90.0030.08020.97
5.6.80.0130.04720.38
5.5.350.0170.07720.41
5.5.340.0130.05717.96
5.5.330.0030.04320.40
5.5.320.0100.07320.13
5.5.310.0430.07020.21
5.5.300.0030.06017.97
5.5.290.0100.07018.01
5.5.280.0000.05720.88
5.5.270.0070.08320.71
5.5.260.0070.05320.63
5.5.250.0070.08020.58
5.5.240.0200.07020.25
5.4.450.3600.04719.26
5.4.440.3630.04019.58
5.4.430.3370.03319.57
5.4.420.3400.04719.22
5.4.410.3530.03319.29
5.4.400.3770.02719.14
5.4.390.3570.03319.09
5.4.380.3600.03019.09
5.4.370.3470.04319.13
5.4.360.3770.04719.13
5.4.350.3230.04019.09
5.4.340.3570.04719.21
5.4.320.3770.04019.10
5.4.310.3530.04019.25
5.4.300.3670.03718.91
5.4.290.3570.03319.09
5.4.280.3530.04019.02
5.4.270.3530.03718.79
5.4.260.3700.04019.13
5.4.250.3230.03719.08
5.4.240.3300.03718.80
5.4.230.3470.04319.22
5.4.220.3570.04019.23
5.4.210.3430.03719.21
5.4.200.3500.03718.89
5.4.190.3570.03718.91
5.4.180.3570.03319.15
5.4.170.3330.04018.78
5.4.160.3670.03019.22
5.4.150.4330.04719.06
5.4.140.3400.03316.30
5.4.130.3130.03016.30
5.4.120.3430.02316.36
5.4.110.2070.03016.43
5.4.100.3130.03316.36
5.4.90.3500.03016.34
5.4.80.3430.02716.29
5.4.70.3370.04016.49
5.4.60.3270.04016.36
5.4.50.3900.04016.40
5.4.40.3270.02716.36
5.4.30.3230.04016.46
5.4.20.3430.03716.38
5.4.10.3530.03316.28
5.4.00.3600.03315.73
5.3.290.3530.04014.54
5.3.280.3700.03714.43
5.3.270.3500.04014.44
5.3.260.3500.04314.45
5.3.250.3070.03014.63
5.3.240.3230.03014.44
5.3.230.3330.03714.50
5.3.220.3330.03314.52
5.3.210.3170.03314.42
5.3.200.3000.03014.47
5.3.190.3370.03714.54
5.3.180.3670.03714.55
5.3.170.3230.04014.43
5.3.160.3370.03014.60
5.3.150.3470.03314.41
5.3.140.3270.04014.39
5.3.130.3400.03314.49
5.3.120.3330.04014.49
5.3.110.3400.04014.57
5.3.100.3400.04013.96
5.3.90.3700.02713.85
5.3.80.3930.04013.90
5.3.70.3500.03314.02
5.3.60.3830.03014.05
5.3.50.3430.04014.03
5.3.40.3700.03313.99
5.3.30.3430.03013.75
5.3.20.3930.03313.48
5.3.10.3730.03313.62
5.3.00.3670.03313.73
5.2.170.2930.03011.00
5.2.160.2830.02711.16
5.2.150.2570.03011.00
5.2.140.3100.02711.02
5.2.130.2930.03011.14
5.2.120.2970.02311.25
5.2.110.2970.03011.10
5.2.100.3130.03011.04
5.2.90.2830.03310.94
5.2.80.3000.03311.25
5.2.70.3070.03311.11
5.2.60.3030.03710.95
5.2.50.3170.03011.06
5.2.40.2270.03311.09
5.2.30.2730.02710.81
5.2.20.2930.03010.96
5.2.10.3230.03010.96
5.2.00.2930.02310.62
5.1.60.2870.0279.85
5.1.50.2300.0239.88
5.1.40.2770.0279.94
5.1.30.2930.02710.23
5.1.20.2500.02710.45
5.1.10.2530.02310.18
5.1.00.2370.02710.00
5.0.50.1170.0238.52
5.0.40.1200.0178.34
5.0.30.1130.0308.10
5.0.20.1630.0208.17
5.0.10.1600.0208.09
5.0.00.1470.0308.15
4.4.90.1430.0175.82
4.4.80.1230.0175.81
4.4.70.1470.0135.81
4.4.60.1670.0175.81
4.4.50.1470.0135.82
4.4.40.1430.0235.78
4.4.30.0900.0135.89
4.4.20.1230.0135.85
4.4.10.1200.0175.86
4.4.00.1470.0275.84
4.3.110.0900.0175.73
4.3.100.1400.0135.70
4.3.90.1500.0175.79
4.3.80.1430.0305.67
4.3.70.1370.0175.74
4.3.60.1470.0135.79
4.3.50.1430.0135.72
4.3.40.1430.0305.71
4.3.30.0800.0204.83
4.3.20.0770.0134.83
4.3.10.0830.0204.83
4.3.00.0870.0204.83

preferences:
50.56 ms | 401 KiB | 5 Q