3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo 'Before' . "\n" ; $str=mb_strtolower('İstanbul'); for ($i = 0; $i < strlen($str); $i++) echo $str[$i] . " => " . ord($str[$i]) . "\n"; echo "\n" . 'After' . "\n" ; $str=mb_convert_case('İstanbul', MB_CASE_LOWER_SIMPLE) ; for ($i = 0; $i < strlen($str); $i++) echo $str[$i] . " => " . ord($str[$i]) . "\n";

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)
8.5.00.0120.01019.86
8.4.150.0020.00014.05
8.4.140.0110.01017.45
8.4.130.0140.00717.65
8.4.120.0110.00922.24
8.4.110.0110.01018.88
8.4.100.0060.00517.61
8.4.90.0090.00917.82
8.4.80.0060.00417.87
8.4.70.0440.00718.18
8.4.60.0390.00718.18
8.4.50.0400.00418.18
8.4.40.0360.01118.18
8.4.30.0340.00318.18
8.4.20.0220.00618.18
8.4.10.0200.00418.18
8.3.280.0110.00918.55
8.3.270.0110.00816.44
8.3.260.0110.00816.41
8.3.250.0110.00818.94
8.3.240.0050.00416.55
8.3.230.0110.00716.72
8.3.220.0030.00516.50
8.3.210.0210.00418.18
8.3.200.0290.00518.18
8.3.190.0310.00818.18
8.3.180.0420.01118.18
8.3.170.0430.00818.18
8.3.160.0170.00818.18
8.3.150.0370.00618.18
8.3.140.0190.00618.18
8.3.130.0180.00218.18
8.3.120.0160.00518.18
8.3.110.0370.00718.18
8.3.100.0380.01218.18
8.3.90.0420.00918.18
8.3.80.0350.01318.18
8.3.70.0370.01018.18
8.3.60.0310.00518.18
8.3.50.0230.00518.18
8.3.40.0210.00818.18
8.3.30.0330.00618.18
8.3.20.0290.01018.18
8.3.10.0300.00918.18
8.3.00.0220.00418.18
8.2.290.0100.00920.81
8.2.280.0290.00818.18
8.2.270.0340.00718.18
8.2.260.0350.00918.18
8.2.250.0380.00818.18
8.2.240.0350.00718.18
8.2.230.0310.01118.18
8.2.220.0330.00818.18
8.2.210.0360.00618.18
8.2.200.0330.01018.18
8.2.190.0340.00918.18
8.2.180.0370.00618.18
8.2.170.0430.01118.18
8.2.160.0270.00418.18
8.2.150.0150.00718.18
8.2.140.0140.00718.18
8.2.130.0160.00518.18
8.2.120.0190.00318.18
8.2.110.0300.00418.18
8.2.100.0190.00418.18
8.2.90.0380.00818.18
8.2.80.0360.00718.18
8.2.70.0390.00418.18
8.2.60.0320.00818.18
8.2.50.0330.01018.18
8.2.40.0330.00818.18
8.2.30.0400.00918.18
8.2.20.0330.00818.18
8.2.10.0340.00718.18
8.2.00.0330.00718.18

preferences:
62 ms | 403 KiB | 5 Q