3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'Hello, World!!!'; $res1 = preg_replace('/ll/', '?', $str); var_dump($res1); $res2 = preg_replace_callback('/ll/', function ($matches) {return '?';}, $str); var_dump($res2); function test($arg[]) { var_dump($arg); } test($str);

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)
5.4.350.0100.05319.21
5.4.340.0130.04212.03
5.4.320.0080.05112.52
5.4.310.0160.04412.52
5.4.300.0140.04312.52
5.4.290.0070.05012.52
5.4.280.0150.03712.41
5.4.270.0110.03112.41
5.4.260.0100.04012.41
5.4.250.0120.03912.41
5.4.240.0070.03912.41
5.4.230.0060.04112.40
5.4.220.0070.04012.41
5.4.210.0080.04312.41
5.4.200.0130.04312.41
5.4.190.0090.04612.40
5.4.180.0070.03812.40
5.4.170.0100.05012.40
5.4.160.0110.04712.40
5.4.150.0050.04912.39
5.4.140.0100.04212.09
5.4.130.0020.04712.07
5.4.120.0110.04812.04
5.4.110.0080.05112.03
5.4.100.0150.04112.03
5.4.90.0100.04912.03
5.4.80.0130.05012.03
5.4.70.0100.05012.02
5.4.60.0140.04612.03
5.4.50.0060.05212.03
5.4.40.0110.04712.02
5.4.30.0100.04912.01
5.4.20.0120.04812.01
5.4.10.0100.04812.01
5.4.00.0120.04411.51
5.3.290.0090.05212.80
5.3.280.0070.05012.71
5.3.270.0120.05012.72
5.3.260.0070.05312.71
5.3.250.0090.06312.72
5.3.240.0120.04912.72
5.3.230.0070.05012.71
5.3.220.0070.04812.68
5.3.210.0060.04912.68
5.3.200.0080.04312.68
5.3.190.0070.04112.68
5.3.180.0080.04212.68
5.3.170.0050.05512.67
5.3.160.0080.05012.67
5.3.150.0100.05012.68
5.3.140.0080.05112.66
5.3.130.0090.05612.66
5.3.120.0140.05112.66
5.3.110.0110.06712.66
5.3.100.0060.05112.13
5.3.90.0050.04112.11
5.3.80.0060.04312.10
5.3.70.0070.03912.11
5.3.60.0100.05112.09
5.3.50.0090.04312.02
5.3.40.0080.04612.03
5.3.30.0080.04111.98
5.3.20.0070.04111.77
5.3.10.0040.04511.74
5.3.00.0020.04211.72
5.2.170.0070.0349.19
5.2.160.0120.0349.18
5.2.150.0100.0379.19
5.2.140.0050.0319.18
5.2.130.0050.0339.14
5.2.120.0060.0399.14
5.2.110.0100.0349.15
5.2.100.0050.0409.14
5.2.90.0050.0409.14
5.2.80.0080.0389.14
5.2.70.0060.0409.14
5.2.60.0040.0379.09
5.2.50.0030.0329.06
5.2.40.0060.0379.04
5.2.30.0160.0309.02
5.2.20.0070.0309.00
5.2.10.0080.0418.92
5.2.00.0060.0298.78
5.1.60.0040.0268.07
5.1.50.0080.0298.07
5.1.40.0070.0258.04
5.1.30.0070.0248.39
5.1.20.0080.0268.42
5.1.10.0030.0298.15
5.1.00.0040.0288.14
5.0.50.0020.0236.62
5.0.40.0050.0176.49
5.0.30.0050.0316.29
5.0.20.0030.0196.26
5.0.10.0050.0196.25
5.0.00.0080.0276.23
4.4.90.0020.0164.78
4.4.80.0020.0184.75
4.4.70.0050.0134.76
4.4.60.0020.0164.76
4.4.50.0030.0184.77
4.4.40.0040.0274.71
4.4.30.0040.0224.76
4.4.20.0060.0184.84
4.4.10.0040.0204.85
4.4.00.0030.0274.76
4.3.110.0080.0134.67
4.3.100.0050.0134.66
4.3.90.0070.0174.63
4.3.80.0050.0284.58
4.3.70.0060.0174.63
4.3.60.0030.0164.63
4.3.50.0050.0164.62
4.3.40.0040.0244.54
4.3.30.0020.0253.28
4.3.20.0020.0213.26
4.3.10.0050.0183.22
4.3.00.0230.0207.15

preferences:
144.97 ms | 1394 KiB | 7 Q