3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern = '/(\d{3}(?!$))(\d{3}$)?/'; $replacement = '$1,$2'; $num = 1234; var_dump(preg_replace($pattern, $replacement, $num)); //123,4 $num = 123456789; var_dump(preg_replace($pattern, $replacement, $num)); //123,456,789 $num = 123; var_dump(preg_replace($pattern, $replacement, $num)); //123 $num = 1234567890; var_dump(preg_replace($pattern, $replacement, $num)); //123,456,789,0

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)
8.3.130.0030.00618.36
8.3.120.0040.00420.80
8.3.110.0060.00316.50
8.3.100.0070.00424.06
8.3.90.0000.00826.77
8.3.80.0060.00318.30
8.3.70.0100.01016.75
8.3.60.0040.01116.63
8.3.50.0070.01016.34
8.3.40.0130.00723.74
8.3.30.0040.01120.12
8.3.20.0050.00324.18
8.3.10.0070.01121.95
8.3.00.0090.00018.91
8.2.250.0050.00316.93
8.2.240.0060.00317.06
8.2.230.0030.00620.94
8.2.220.0080.00837.54
8.2.210.0040.00426.77
8.2.200.0040.00718.79
8.2.190.0100.01016.89
8.2.180.0110.00416.38
8.2.170.0030.01319.09
8.2.160.0060.00922.96
8.2.150.0040.00425.66
8.2.140.0030.00520.35
8.2.130.0030.00520.35
8.2.120.0150.00319.19
8.2.110.0050.00318.97
8.2.100.0030.00619.14
8.2.90.0110.00818.90
8.2.80.0100.00618.86
8.2.70.0090.00018.90
8.2.60.0000.00818.77
8.2.50.0000.00818.72
8.2.40.0080.00018.79
8.2.30.0040.00418.66
8.2.20.0040.00418.70
8.2.10.0040.00418.83
8.2.00.0040.00418.83
8.1.300.0080.00020.07
8.1.290.0090.00030.84
8.1.280.0120.00625.92
8.1.270.0000.00822.23
8.1.260.0040.00422.01
8.1.250.0040.00422.06
8.1.240.0040.00418.63
8.1.230.0050.00318.53
8.1.220.0050.00318.82
8.1.210.0050.00318.59
8.1.200.0040.00418.69
8.1.190.0040.00418.68
8.1.180.0040.00418.39
8.1.170.0040.00418.61
8.1.160.0080.00018.63
8.1.150.0090.00018.61
8.1.140.0000.00918.66
8.1.130.0040.00418.53
8.1.120.0040.00418.68
8.1.110.0080.00018.73
8.1.100.0000.00818.55
8.1.90.0040.00418.70
8.1.80.0060.00318.73
8.1.70.0030.00618.68
8.1.60.0080.00018.80
8.1.50.0060.00318.73
8.1.40.0060.00318.85
8.1.30.0050.00318.81
8.1.20.0030.00518.82
8.1.10.0060.00318.74
8.1.00.0090.00018.56

preferences:
39.02 ms | 403 KiB | 5 Q