3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '回';echo $str{0};echo urlencode($str); echo $bin = pack("C3", ord($str{0}), ord($str{1}), ord($str{2}));//回 $hex = strtoupper(bin2hex($bin)); echo "UTF-8编码: " . $hex . "\n"; $byte1 = ord($str{0}); $byte2 = ord($str{1}); $byte3 = ord($str{2}); $c1 = (($byte1 & 0x0F) << 4) | (($byte2 & 0x3F) >> 2); $c2 = (($byte2 & 0x03) << 6) | ($byte3 & 0x3F); $dec = (($c1 & 0x00FF) << 8) | $c2; echo "Unicode编码: " . $dec . "\n";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/PhE3b on line 3
Process exited with code 255.
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 3 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 4 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 4 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 4 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 7 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 8 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/PhE3b on line 9 �%E5%9B%9E回UTF-8编码: E59B9E Unicode编码: 22238
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.26
�%E5%9B%9E回UTF-8编码: E59B9E Unicode编码: 22238
preferences:
260.99 ms | 404 KiB | 374 Q