3v4l.org

run code in 300+ PHP versions simultaneously
<?php $content = '[btn href="(.?)" "(.?)"]'; echo preg_replace('#[btn href="(.*?)" "(.*?)"]#i', '<a href="$1" class="btn"> $2</a>', $content);`

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)
5.4.320.0020.04112.47
5.4.310.0020.04212.46
5.4.300.0040.03812.47
5.4.290.0050.03912.46
5.4.280.0090.03312.36
5.4.270.0080.04312.36
5.4.260.0050.05212.36
5.4.250.0060.04012.36
5.4.240.0050.03812.36
5.4.230.0070.04412.36
5.4.220.0060.03912.36
5.4.210.0060.03412.35
5.4.200.0080.04312.36
5.4.190.0070.03512.35
5.4.180.0070.03612.35
5.4.170.0090.03312.36
5.4.160.0050.03712.35
5.4.150.0100.03212.35
5.4.140.0080.03512.04
5.4.130.0050.03612.02
5.4.120.0050.03611.99
5.4.110.0060.03511.98
5.4.100.0030.04011.98
5.4.90.0050.03611.98
5.4.80.0080.03411.98
5.4.70.0070.03711.98
5.4.60.0030.03711.98
5.4.50.0030.03811.98
5.4.40.0050.03711.97
5.4.30.0080.04611.97
5.4.20.0090.03611.96
5.4.10.0110.03011.96
5.4.00.0050.03711.46
5.3.290.0040.04112.80
5.3.280.0060.04012.71
5.3.270.0080.03712.72
5.3.260.0070.03712.72
5.3.250.0090.03412.72
5.3.240.0100.03312.72
5.3.230.0050.04312.71
5.3.220.0060.03812.68
5.3.210.0070.03912.68
5.3.200.0070.03612.68
5.3.190.0040.04012.68
5.3.180.0040.03912.67
5.3.170.0050.03812.67
5.3.160.0070.03912.67
5.3.150.0030.03912.67
5.3.140.0060.03712.66
5.3.130.0060.03812.66
5.3.120.0070.03812.66
5.3.110.0070.03812.66
5.3.100.0110.03212.12
5.3.90.0070.03512.08
5.3.80.0080.03312.07
5.3.70.0050.04112.08
5.3.60.0020.04212.07
5.3.50.0020.03912.00
5.3.40.0070.03412.00
5.3.30.0030.03711.95
5.3.20.0050.03511.72
5.3.10.0050.03511.70
5.3.00.0050.03611.68
5.2.170.0050.0299.18
5.2.160.0050.0299.18
5.2.150.0030.0329.18
5.2.140.0050.0299.18
5.2.130.0090.0269.14
5.2.120.0080.0289.14
5.2.110.0040.0299.14
5.2.100.0020.0309.14
5.2.90.0030.0309.14
5.2.80.0030.0319.14
5.2.70.0040.0309.14
5.2.60.0050.0359.09
5.2.50.0080.0269.06
5.2.40.0040.0299.04
5.2.30.0040.0319.02
5.2.20.0090.0249.00
5.2.10.0050.0278.93
5.2.00.0040.0298.78
5.1.60.0060.0228.07
5.1.50.0050.0258.06
5.1.40.0040.0248.05
5.1.30.0050.0248.40
5.1.20.0040.0288.42
5.1.10.0040.0258.14
5.1.00.0040.0258.15
5.0.50.0040.0206.62
5.0.40.0040.0196.48
5.0.30.0030.0316.29
5.0.20.0020.0216.27
5.0.10.0060.0176.24
5.0.00.0040.0306.23
4.4.90.0050.0164.77
4.4.80.0050.0154.75
4.4.70.0000.0204.76
4.4.60.0020.0174.75
4.4.50.0040.0174.77
4.4.40.0010.0274.70
4.4.30.0020.0164.76
4.4.20.0040.0144.84
4.4.10.0050.0134.85
4.4.00.0040.0234.76
4.3.110.0000.0184.67
4.3.100.0020.0154.67
4.3.90.0010.0164.64
4.3.80.0030.0244.58
4.3.70.0020.0154.63
4.3.60.0030.0144.63
4.3.50.0020.0164.63
4.3.40.0020.0244.54
4.3.30.0020.0163.28
4.3.20.0020.0153.26
4.3.10.0020.0153.22
4.3.00.0000.0236.98

preferences:
141.54 ms | 1394 KiB | 7 Q