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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. For example, in PHP: strlen( "te\0st" ) = 5 In C, the same call would return 2.
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[Editor's note: array at from dot pl had pointed out that...
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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.
6 lip 2012 · strlen() returns the number of bytes rather than the number of characters in a string. If you take the result and multiple by 8, you can get bits. Here is a function which can easily do the math for you. function strbits($string){ return (strlen($string)*8); } Note, if you use, memory_get_usage(), you will have the wrong value returned. Memory ...
PHP strlen() function is used to count the length of a given string or check the number of characters in a string. Here 'str' means string, and 'len' means length. It only takes one parameter, which is certainly imperative to implement this function.
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.
If you need length of string in bytes (strlen cannot be trusted anymore because of mbstring.func_overload) you should use <?php mb_strlen ($string, '8bit'); ?>. It's the fastest way (still a way slower than strlen, though) to determine byte length of string.
The strlen() function in PHP is a built-in function that returns the length of a given string. It counts the number of bytes in the string, which means it’s not necessarily the same as the number of characters.
