3v4l.org

run code in 300+ PHP versions simultaneously
<?php $find = 'place'; // case is irrelevant to processing $replace = 'garden'; // must be declared in all lowercase echo preg_replace_callback( '#\b' . preg_quote($find) . '\b#ui', function ($word) use ($replace) { $i = 0; return preg_replace_callback( '#(\p{Lu})|.#su', function ($char) use (&$i, $replace) { $newChar = mb_substr($replace, $i++, 1); return isset($char[1]) ? mb_strtoupper($newChar) : $newChar; }, $word[0] ); }, 'Place replacements in their proper plACe without being complacent; use word boundaries.' );

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)
8.3.70.0140.00718.80
8.3.60.0070.00716.73
8.3.50.0110.00416.94
8.3.40.0030.01722.04
8.3.30.0100.00320.34
8.3.20.0130.00623.66
8.3.10.0140.00423.53
8.3.00.0130.00720.94
8.2.190.0040.01217.00
8.2.180.0080.00816.75
8.2.170.0140.00018.98
8.2.160.0110.00422.96
8.2.150.0080.01121.14
8.2.140.0120.00822.24
8.2.130.0130.00722.26
8.2.120.0100.00621.13
8.2.110.0130.00721.13
8.2.100.0110.00421.13
8.2.90.0090.01221.05
8.2.80.0170.00321.20
8.2.70.0070.01020.88
8.2.60.0120.00320.87
8.2.50.0080.00820.88
8.2.40.0150.00020.92
8.2.30.0110.00420.93
8.2.20.0090.00620.93
8.2.10.0120.00420.92
8.2.00.0120.00620.88
8.1.280.0110.01125.92
8.1.270.0070.00723.88
8.1.260.0070.01123.61
8.1.250.0100.00723.96
8.1.240.0110.00720.47
8.1.230.0120.00620.64
8.1.220.0090.00920.76
8.1.210.0110.00720.45
8.1.200.0100.00720.63
8.1.190.0090.00920.49
8.1.180.0000.01520.35
8.1.170.0120.00320.77
8.1.160.0180.00020.60
8.1.150.0070.01120.63
8.1.140.0100.01020.52
8.1.130.0030.01220.64
8.1.120.0070.00720.45
8.1.110.0090.00620.50
8.1.100.0130.00320.34
8.1.90.0130.00718.63
8.1.80.0130.00321.79
8.1.70.0100.00620.49
8.1.60.0120.00420.74
8.1.50.0130.00720.66
8.1.40.0090.00920.76
8.1.30.0130.00320.64
8.1.20.0120.00321.96
8.1.10.0040.01420.60
8.1.00.0070.00720.48

preferences:
42.7 ms | 401 KiB | 5 Q