3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'πŸ‘ΆπŸ»'; echo '=== UTF-8 =============================', PHP_EOL; echo 'STRING: ', $string, PHP_EOL; echo 'CHARACTERS: ', mb_strlen($string), PHP_EOL; // 2 echo 'BYTE COUNT: ', strlen($string), PHP_EOL; // 8 foreach(range(0, mb_strlen($string) - 1) as $index) { echo PHP_EOL; echo 'CHARACTER #', $index + 1, ' CODE POINT: ', '0x', dechex(mb_ord(mb_substr($string, $index, 1))), PHP_EOL; // [0x1f476, 0x1f3fb] echo 'CHARACTER #', $index + 1, ' BYTE COUNT: ', mb_strlen(mb_substr($string, $index, 1), '8bit'), PHP_EOL; // [4, 4] } echo '=======================================', PHP_EOL, PHP_EOL; $string = mb_convert_encoding($string, 'UTF-16', 'UTF-8'); echo '=== UTF-16 ============================', PHP_EOL; echo 'STRING: ', $string, PHP_EOL; echo 'CHARACTERS: ', mb_strlen($string), PHP_EOL; // should be 2, is 4 echo 'BYTE COUNT: ', strlen($string), PHP_EOL; // should be 8, is 8 foreach(range(0, mb_strlen($string) - 1) as $index) { echo PHP_EOL; echo 'CHARACTER #', $index + 1, ' CODE POINT: ', '0x', dechex(mb_ord(mb_substr($string, $index, 1))), PHP_EOL; // should be [0x1f476, 0x1f3fb], is [0x0, 0x0, 0x0, 0x0] echo 'CHARACTER #', $index + 1, ' BYTE COUNT: ', mb_strlen(mb_substr($string, $index, 1), '8bit'), PHP_EOL; // should be [4, 4], is [2, 2, 2, 2] } echo '=======================================', PHP_EOL;

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)
8.3.60.0110.00416.63
8.3.50.0140.00716.45
8.3.40.0090.00618.54
8.3.30.0120.00318.66
8.3.20.0070.00020.90
8.3.10.0000.00823.53
8.3.00.0040.00423.71
8.2.180.0110.00416.75
8.2.170.0090.00622.96
8.2.160.0060.00922.30
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0050.00321.04
8.2.110.0060.00322.11
8.2.100.0110.00017.78
8.2.90.0040.00418.02
8.2.80.0030.00618.05
8.2.70.0060.00318.04
8.2.60.0000.00818.16
8.2.50.0090.00018.10
8.2.40.0090.00022.15
8.2.30.0030.00619.47
8.2.20.0080.00318.18
8.2.10.0040.00419.28
8.2.00.0000.00719.35
8.1.280.0070.01125.92
8.1.270.0080.00020.56
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0030.00622.59
8.1.230.0040.00821.04
8.1.220.0040.00417.74
8.1.210.0050.00318.79
8.1.200.0060.00317.35
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0040.00418.78
8.1.160.0070.00019.08
8.1.150.0040.00419.03
8.1.140.0040.00420.82
8.1.130.0000.00721.96
8.1.120.0040.00417.47
8.1.110.0030.00617.55
8.1.100.0050.00217.56
8.1.90.0080.00017.46
8.1.80.0040.00417.61
8.1.70.0000.00717.55
8.1.60.0050.00317.68
8.1.50.0040.00417.52
8.1.40.0000.00817.49
8.1.30.0040.00417.73
8.1.20.0030.00517.63
8.1.10.0060.00317.62
8.1.00.0000.00817.41
8.0.300.0000.00720.08
8.0.290.0070.00416.75
8.0.280.0030.00318.54
8.0.270.0040.00418.11
8.0.260.0070.00020.07
8.0.250.0000.00817.01
8.0.240.0030.00317.08
8.0.230.0070.00017.05
8.0.220.0060.00016.88
8.0.210.0040.00417.04
8.0.200.0030.00317.01
8.0.190.0040.00317.07
8.0.180.0040.00417.00
8.0.170.0080.00017.01
8.0.160.0040.00417.07
8.0.150.0060.00316.92
8.0.140.0000.00716.92
8.0.130.0050.00013.43
8.0.120.0040.00416.84
8.0.110.0040.00417.05
8.0.100.0040.00416.87
8.0.90.0030.00617.01
8.0.80.0060.01316.97
8.0.70.0060.00316.89
8.0.60.0030.00516.98
8.0.50.0040.00416.78
8.0.30.0070.01517.05
8.0.20.0050.01417.05
8.0.10.0040.00417.00
8.0.00.0150.00316.76
7.4.330.0000.00516.84
7.4.320.0060.00016.59
7.4.300.0000.00716.53
7.4.290.0030.00316.64
7.4.280.0000.00716.67
7.4.270.0040.00416.60
7.4.260.0000.00613.38
7.4.250.0070.00016.46
7.4.240.0000.00716.70
7.4.230.0040.00416.67
7.4.220.0040.00416.44
7.4.210.0080.01016.70
7.4.200.0040.00416.49
7.4.140.0100.01117.86
7.4.130.0090.01016.43
7.4.120.0150.00916.55
7.4.110.0090.01516.55
7.4.100.0150.01116.44
7.4.90.0120.00616.59
7.4.80.0040.01319.39
7.4.70.0100.01016.45
7.4.60.0100.00616.48
7.4.50.0100.00716.61
7.4.40.0030.01316.42
7.4.10.0060.01216.50
7.4.00.0170.00016.60
7.3.330.0040.00416.49
7.3.320.0000.00613.25
7.3.310.0000.00716.35
7.3.300.0070.00016.24
7.3.290.0070.00916.37
7.3.260.0120.00616.58
7.3.240.0140.00616.52
7.3.230.0030.01316.35
7.3.210.0050.01316.33
7.3.200.0120.00816.64
7.3.190.0030.01416.59
7.3.180.0090.00916.65
7.3.170.0120.00616.68
7.3.160.0140.00516.39
7.3.130.0030.01416.52
7.3.120.0120.00616.39
7.3.110.0100.01016.27
7.3.100.0000.01816.32
7.3.90.0110.00816.56
7.3.80.0170.00916.45
7.3.70.0110.00816.28
7.3.60.0130.00716.39
7.3.50.0180.00616.57
7.3.40.0090.00916.38
7.3.30.0040.01216.33
7.3.20.0100.00716.32
7.3.10.0120.00516.56
7.3.00.0040.01416.62
7.2.330.0070.01716.53
7.2.320.0060.01216.66
7.2.310.0130.01116.70
7.2.300.0100.01516.59
7.2.290.0120.00916.74
7.2.260.0080.01016.72
7.2.250.0090.00916.61
7.2.240.0110.00816.62
7.2.230.0110.00916.72
7.2.220.0110.00816.68
7.2.210.0070.01416.63
7.2.200.0140.00616.62
7.2.190.0160.00516.79
7.2.180.0140.01016.67
7.2.170.0030.01416.73
7.2.160.0060.01216.73
7.2.150.0140.00316.64
7.2.140.0080.01116.68
7.2.130.0050.01316.56
7.2.120.0120.00616.55
7.2.110.0130.00516.78
7.2.100.0090.01216.52
7.2.90.0120.00616.51
7.2.80.0170.00316.62
7.2.70.0120.00616.71
7.2.60.0090.00916.79
7.2.50.0140.00716.53
7.2.40.0060.01216.77
7.2.30.0150.00416.73
7.2.20.0160.00816.88
7.2.10.0070.01016.54
7.2.00.0070.01316.84

preferences:
61.12 ms | 401 KiB | 5 Q