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27 wrz 2011 · You can use mb_strlen() to get the byte length using a encoding that only have byte-characters, without worring about multibyte or singlebyte strings. For example, as drake127 saids in a comment of mb_strlen, you can use '8bit' encoding:
PHP's strlen function behaves differently than the C strlen function in terms of its handling of null bytes ('\0'). In PHP, a null byte in a string does NOT count as the end of the string, and any null bytes are included in the length of the string.
18 sie 2013 · function formatBytes($bytes, $precision) { $unit_list = array ( 'B', 'KB', 'MB', 'GB', 'TB', ); $bytes = max($bytes, 0); $index = floor(log($bytes, 2) / 10); $index = min($index, count($unit_list) - 1); $bytes /= pow(1024, $index); return round($bytes, $precision) . ' ' . $unit_list[$index]; }
Definition and Usage. The strlen () function returns the length of a string. Syntax. strlen (string) Parameter Values. Technical Details. More Examples. Example. Return the length of the string "Hello World": <?php. echo strlen ("Hello world!"); ?> Try it Yourself » PHP String Reference. W3schools Pathfinder.
strlen() returns the number of bytes rather than the number of characters in a string.
Use the PHP strlen () function to get the number of bytes of a string. Use the PHP mb_strlen () function to get the number of characters in a string with a specific encoding.
strlen returns the number of bytes rather than the number of characters in a string. Note: strlen returns null when executed on arrays, and an E_WARNING level error is emitted.
