3v4l.org

run code in 300+ PHP versions simultaneously
<?php $number = 1; $answer = "p__v_"; $letter = mb_substr( $answer , 2, 1 ); $answer = preg_replace('/'.$letter.'/u', '_',$answer,1); echo $answer;

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)
8.3.60.0140.00416.62
8.3.50.0090.00616.64
8.3.40.0040.01119.09
8.3.30.0040.01118.84
8.3.20.0040.00420.30
8.3.10.0050.00323.53
8.3.00.0070.00023.36
8.2.180.0180.00316.63
8.2.170.0110.00422.96
8.2.160.0100.00720.27
8.2.150.0060.00324.18
8.2.140.0090.00024.66
8.2.130.0050.00319.64
8.2.120.0040.00426.35
8.2.110.0100.00022.33
8.2.100.0080.00418.04
8.2.90.0040.00419.28
8.2.80.0040.00417.97
8.2.70.0030.00617.75
8.2.60.0000.00817.93
8.2.50.0000.00818.07
8.2.40.0000.00922.26
8.2.30.0000.00919.44
8.2.20.0000.00717.79
8.2.10.0050.00218.14
8.2.00.0040.00418.07
8.1.280.0040.01125.92
8.1.270.0000.00822.20
8.1.260.0030.00628.09
8.1.250.0000.00828.09
8.1.240.0120.00920.54
8.1.230.0070.00419.10
8.1.220.0030.00517.74
8.1.210.0000.00918.77
8.1.200.0030.00717.47
8.1.190.0050.00317.38
8.1.180.0040.00418.10
8.1.170.0040.00418.54
8.1.160.0000.00820.70
8.1.150.0030.00518.82
8.1.140.0000.00819.64
8.1.130.0000.00817.75
8.1.120.0040.00417.63
8.1.110.0050.00217.58
8.1.100.0040.00417.60
8.1.90.0070.00017.59
8.1.80.0000.00817.61
8.1.70.0070.00017.62
8.1.60.0030.00617.63
8.1.50.0040.00417.62
8.1.40.0040.00417.75
8.1.30.0000.00817.77
8.1.20.0030.00617.75
8.1.10.0040.00417.62
8.1.00.0000.00817.54
8.0.300.0030.00518.77
8.0.290.0000.00817.00
8.0.280.0030.00518.42
8.0.270.0030.00317.22
8.0.260.0060.00017.24
8.0.250.0070.00017.11
8.0.240.0060.00317.21
8.0.230.0030.00317.14
8.0.220.0000.00717.14
8.0.210.0080.00017.03
8.0.200.0030.00317.09
8.0.190.0000.00717.23
8.0.180.0070.00017.15
8.0.170.0000.00817.20
8.0.160.0040.00417.24
8.0.150.0000.00716.98
8.0.140.0040.00417.12
8.0.130.0030.00313.62
8.0.120.0040.00417.13
8.0.110.0050.00217.16
8.0.100.0050.00217.17
8.0.90.0000.00717.22
8.0.80.0140.00417.20
8.0.70.0080.00017.19
8.0.60.0040.00417.16
8.0.50.0050.00216.91
8.0.30.0070.01417.21
8.0.20.0140.01017.40
8.0.10.0000.00816.96
8.0.00.0120.00516.98
7.4.330.0030.00315.08
7.4.320.0060.00016.66
7.4.300.0040.00416.70
7.4.290.0030.00316.53
7.4.280.0060.00316.65
7.4.270.0000.00716.78
7.4.260.0000.01016.67
7.4.250.0070.00016.62
7.4.240.0020.00516.63
7.4.230.0000.00716.75
7.4.220.0190.00616.67
7.4.210.0070.01116.70
7.4.200.0040.00416.63
7.4.160.0060.00916.62
7.4.150.0070.01017.40
7.4.140.0090.01217.86
7.4.130.0090.01016.66
7.4.120.0120.00916.63
7.4.110.0060.01016.70
7.4.100.0090.00916.75
7.4.90.0060.01216.59
7.4.80.0140.00319.39
7.4.70.0060.01116.59
7.4.60.0100.00716.75
7.4.50.0070.01016.36
7.4.40.0080.01616.43
7.4.30.0060.01516.68
7.4.00.0110.00715.05
7.3.330.0050.00013.30
7.3.320.0030.00313.21
7.3.310.0070.00016.31
7.3.300.0030.00316.48
7.3.290.0000.00716.40
7.3.280.0050.01016.48
7.3.270.0110.00717.40
7.3.260.0070.01016.58
7.3.250.0100.00716.50
7.3.240.0100.01116.72
7.3.230.0090.00916.50
7.3.210.0150.00616.41
7.3.200.0110.01119.39
7.3.190.0030.01316.59
7.3.180.0060.00916.56
7.3.170.0100.00616.55
7.3.160.0060.00916.84
7.2.330.0060.01216.82
7.2.320.0160.00616.61
7.2.310.0060.01216.80
7.2.300.0160.00016.91
7.2.290.0060.01616.60
7.2.60.0060.00817.07
7.2.50.0060.00917.20
7.1.200.0080.00515.89
7.1.100.0030.00918.26
7.1.70.0040.01117.39
7.1.60.0110.01419.30
7.1.50.0000.01117.22
7.1.00.0030.07322.52
7.0.200.0030.00716.94
7.0.60.0170.07321.74
7.0.50.0130.07717.81
7.0.40.0000.05720.25
7.0.30.0330.07320.13
7.0.20.0270.08320.19
7.0.10.0070.05320.13
7.0.00.0130.03320.19
5.6.280.0030.05720.81
5.6.210.0070.08720.46
5.6.200.0100.05018.12
5.6.190.0030.04720.45
5.6.180.0430.08020.35
5.6.170.0230.07020.41
5.6.160.0100.05320.47
5.6.150.0070.06318.15
5.6.140.0130.08018.12
5.6.130.0030.05718.12
5.6.120.0130.05021.07
5.6.110.0070.04020.98
5.6.100.0170.06721.03
5.6.90.0100.05720.97
5.6.80.0070.03720.37
5.5.350.0230.03020.43
5.5.340.0030.07718.02
5.5.330.0100.04020.21
5.5.320.0670.06720.24
5.5.310.0330.07320.34
5.5.300.0070.05317.90
5.5.290.0030.08717.98
5.5.280.0100.04320.93
5.5.270.0030.06320.86
5.5.260.0100.08020.79
5.5.250.0070.07020.54
5.5.240.0130.04720.18

preferences:
55.49 ms | 401 KiB | 5 Q