3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo preg_replace('/(?!dog)/', '<$0>', 'where my dog is now?');

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)
8.3.60.0140.00718.54
8.3.50.0200.00821.15
8.3.40.0070.01118.87
8.3.30.0110.00419.16
8.3.20.0040.00420.30
8.3.10.0040.00422.09
8.3.00.0050.00222.39
8.2.180.0110.01116.50
8.2.170.0100.00322.96
8.2.160.0070.00720.53
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0060.01326.16
8.2.120.0040.00419.66
8.2.110.0070.00320.47
8.2.100.0080.00421.18
8.2.90.0080.00019.27
8.2.80.0040.00419.34
8.2.70.0080.00017.75
8.2.60.0040.00418.04
8.2.50.0030.00518.07
8.2.40.0000.00718.16
8.2.30.0070.00017.90
8.2.20.0000.00717.79
8.2.10.0080.00017.77
8.2.00.0040.00417.74
8.1.280.0100.00725.92
8.1.270.0060.00320.40
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0060.00323.85
8.1.230.0100.00019.11
8.1.220.0030.00717.74
8.1.210.0030.00618.77
8.1.200.0060.00317.25
8.1.190.0040.00417.28
8.1.180.0000.00720.06
8.1.170.0030.00618.54
8.1.160.0040.00422.07
8.1.150.0050.00218.67
8.1.140.0030.00617.52
8.1.130.0000.00717.68
8.1.120.0000.00717.44
8.1.110.0000.00817.48
8.1.100.0050.00217.33
8.1.90.0030.00517.38
8.1.80.0000.00717.48
8.1.70.0070.00017.34
8.1.60.0000.00917.62
8.1.50.0000.00817.49
8.1.40.0040.00417.42
8.1.30.0000.00717.49
8.1.20.0030.00517.63
8.1.10.0040.00417.55
8.1.00.0040.00717.53
8.0.300.0070.00018.77
8.0.290.0070.00017.16
8.0.280.0000.00718.32
8.0.270.0070.00017.12
8.0.260.0030.00316.96
8.0.250.0000.00717.08
8.0.240.0000.00817.06
8.0.230.0040.00417.07
8.0.220.0040.00417.04
8.0.210.0040.00416.97
8.0.200.0040.00416.87
8.0.190.0050.00317.07
8.0.180.0040.00417.00
8.0.170.0000.00716.95
8.0.160.0000.00717.02
8.0.150.0040.00416.89
8.0.140.0000.00816.95
8.0.130.0030.00313.39
8.0.120.0030.00516.95
8.0.110.0000.00816.91
8.0.100.0040.00417.00
8.0.90.0070.00016.97
8.0.80.0100.00616.97
8.0.70.0040.00417.01
8.0.60.0030.00416.77
8.0.50.0040.00416.78
8.0.30.0140.01117.19
8.0.20.0120.01417.43
8.0.10.0070.00016.93
8.0.00.0050.01216.76
7.4.330.0000.00515.00
7.4.320.0020.00516.70
7.4.300.0030.00316.73
7.4.290.0040.00416.60
7.4.280.0030.00516.56
7.4.270.0000.00716.57
7.4.260.0030.00316.73
7.4.250.0000.00716.59
7.4.240.0070.00016.61
7.4.230.0030.00316.42
7.4.220.0140.00416.63
7.4.210.0090.00716.62
7.4.200.0050.00216.75
7.4.190.0030.00316.46
7.4.160.0080.00816.44
7.4.150.0130.00617.40
7.4.140.0100.01017.86
7.4.130.0150.00216.63
7.4.120.0080.00916.53
7.4.110.0120.00616.69
7.4.100.0100.01316.43
7.4.90.0150.00316.68
7.4.80.0140.01319.39
7.4.70.0070.01016.41
7.4.60.0080.00816.70
7.4.50.0030.00616.57
7.4.40.0070.01022.77
7.4.30.0130.00316.37
7.4.00.0100.00714.93
7.3.330.0030.00313.25
7.3.320.0000.00513.12
7.3.310.0030.00316.28
7.3.300.0030.00316.20
7.3.290.0150.00616.34
7.3.280.0060.00816.36
7.3.270.0030.01617.40
7.3.260.0090.00916.64
7.3.250.0100.00716.48
7.3.240.0070.01316.76
7.3.230.0040.01416.39
7.3.210.0080.00816.29
7.3.200.0120.00619.39
7.3.190.0070.01116.63
7.3.180.0080.00816.65
7.3.170.0090.00616.27
7.3.160.0030.01316.37
7.3.120.0070.01014.79
7.3.110.0110.00714.48
7.3.100.0060.00914.89
7.3.90.0070.00714.58
7.3.80.0160.00014.81
7.3.70.0030.01014.61
7.3.60.0090.00914.73
7.3.50.0100.00714.91
7.3.40.0090.00614.95
7.3.30.0000.01514.63
7.3.20.0060.00916.56
7.3.10.0120.00616.82
7.3.00.0130.00016.47
7.2.330.0070.01016.57
7.2.320.0180.00516.60
7.2.310.0110.00616.61
7.2.300.0110.01116.73
7.2.290.0100.00716.56
7.2.250.0130.00615.31
7.2.240.0060.01514.79
7.2.230.0140.00014.98
7.2.220.0030.01015.29
7.2.210.0060.00615.16
7.2.200.0070.00715.04
7.2.190.0060.00915.07
7.2.180.0060.00315.05
7.2.170.0000.01215.21
7.2.60.0060.00616.97
7.2.00.0030.01219.53
7.1.330.0040.00816.06
7.1.320.0070.00715.86
7.1.310.0030.00915.43
7.1.300.0120.00615.71
7.1.290.0040.01115.82
7.1.280.0070.00716.04
7.1.270.0040.01215.92
7.1.260.0170.00015.93
7.1.200.0080.00415.76
7.1.100.0030.01018.36
7.1.70.0030.00616.87
7.1.60.0130.00319.82
7.1.50.0070.01317.00
7.1.00.0070.03022.31
7.0.200.0030.00516.61
7.0.140.0100.07021.96
7.0.60.0070.05319.92
7.0.50.0030.08017.68
7.0.40.0100.03720.14
7.0.30.0270.07720.19
7.0.20.0130.09020.35
7.0.10.0070.09020.02
7.0.00.0100.05020.20
5.6.280.0070.07020.89
5.6.210.0070.06720.55
5.6.200.0100.08018.19
5.6.190.0030.07020.56
5.6.180.0270.06720.43
5.6.170.0270.05020.62
5.6.160.0130.03320.41
5.6.150.0030.08718.22
5.6.140.0030.07018.09
5.6.130.0130.03018.23
5.6.120.0070.08020.98
5.6.110.0100.08320.98
5.6.100.0130.05720.96
5.6.90.0000.09021.12
5.6.80.0100.06320.38
5.5.350.3800.03020.32
5.5.340.0130.07317.97
5.5.330.0000.09020.21
5.5.320.0370.05720.28
5.5.310.0330.08020.18
5.5.300.0100.03718.00
5.5.290.0170.05717.98
5.5.280.0070.08020.79
5.5.270.0030.04320.88
5.5.260.0070.08320.86
5.5.250.0100.05720.49
5.5.240.0300.06020.14
5.4.450.0600.04019.29
5.4.440.0670.03719.48
5.4.430.0870.04319.45
5.4.420.0430.04719.56
5.4.410.0700.03719.28
5.4.400.0370.04319.24
5.4.390.0470.03319.25
5.4.380.0370.05018.69
5.4.370.0400.04318.72
5.4.360.0230.05718.72
5.4.350.0300.05318.70
5.4.340.0370.05018.49
5.4.320.0100.03812.45
5.4.310.0050.03812.45
5.4.300.0010.04112.45
5.4.290.0070.03812.45
5.4.280.0040.03612.34
5.4.270.0060.03712.34
5.4.260.0060.03812.35
5.4.250.0100.07318.73
5.4.240.0130.04318.84
5.4.230.0100.04718.98
5.4.220.0030.06318.89
5.4.210.0000.06018.79
5.4.200.0100.04718.99
5.4.190.0070.05318.95
5.4.180.0130.05018.72
5.4.170.0100.05018.63
5.4.160.0030.05718.71
5.4.150.0100.05318.82
5.4.140.0070.06016.32
5.4.130.0100.04716.21
5.4.120.0130.04316.25
5.4.110.0070.05316.20
5.4.100.0200.05316.48
5.4.90.0030.05316.42
5.4.80.0030.04716.27
5.4.70.0070.05016.38
5.4.60.0100.04316.36
5.4.50.0100.04316.45
5.4.40.0100.04316.23
5.4.30.0100.04716.30
5.4.20.0070.04716.38
5.4.10.0030.05316.36
5.4.00.0070.04715.90
5.3.290.0050.04212.80
5.3.280.0100.05014.45
5.3.270.0170.04314.47
5.3.260.0130.07714.61
5.3.250.0000.05714.62
5.3.240.0030.05314.61
5.3.230.0130.06314.46
5.3.220.0070.05314.61
5.3.210.0100.04714.40
5.3.200.0130.04714.48
5.3.190.0000.06014.61
5.3.180.0070.07314.55
5.3.170.0000.05314.56
5.3.160.0100.04714.58
5.3.150.0100.04714.46
5.3.140.0100.04714.32
5.3.130.0200.05714.55
5.3.120.0070.05314.43
5.3.110.0070.05014.56
5.3.100.0000.05314.05
5.3.90.0030.05314.03
5.3.80.0030.05013.78
5.3.70.0170.05014.16
5.3.60.0030.05013.84
5.3.50.0130.04013.95
5.3.40.0130.04013.94
5.3.30.0100.04013.84
5.3.20.0100.04013.54
5.3.10.0170.03713.58
5.3.00.0000.06013.33
5.2.170.0070.03711.07
5.2.160.0100.04011.14
5.2.150.0030.04011.13
5.2.140.0070.03711.23
5.2.130.0070.03311.11
5.2.120.0030.04011.11
5.2.110.0030.03711.09
5.2.100.0000.04011.11
5.2.90.0070.03711.10
5.2.80.0100.03311.08
5.2.70.0070.03711.02
5.2.60.0070.03711.20
5.2.50.0000.04311.03
5.2.40.0030.04010.91
5.2.30.0000.06010.97
5.2.20.0100.04710.79
5.2.10.0070.04710.79
5.2.00.0100.04010.61
5.1.60.0030.03310.09
5.1.50.0030.03010.05
5.1.40.0070.0309.74
5.1.30.0070.03010.24
5.1.20.0030.03710.35
5.1.10.0030.03710.08
5.1.00.0100.02710.13
5.0.50.0030.0278.63
5.0.40.0070.0238.25
5.0.30.0000.0408.30
5.0.20.0000.0338.38
5.0.10.0000.0308.21
5.0.00.0000.0438.11
4.4.90.0030.0176.69
4.4.80.0000.0236.69
4.4.70.0000.0236.69
4.4.60.0000.0206.69
4.4.50.0000.0206.69
4.4.40.0000.0336.69
4.4.30.0100.0106.69
4.4.20.0000.0206.69
4.4.10.0030.0206.69
4.4.00.0030.0306.69
4.3.110.0030.0206.67
4.3.100.0000.0206.67
4.3.90.0100.0136.67
4.3.80.0070.0276.67
4.3.70.0000.0206.67
4.3.60.0030.0176.67
4.3.50.0030.0206.67
4.3.40.0030.0306.67
4.3.30.0000.0236.67
4.3.20.0000.0236.67
4.3.10.0000.0236.67
4.3.00.0000.01714.52

preferences:
41.96 ms | 401 KiB | 5 Q