It takes a string as a parameter and returns its length. The strlen () is a built-in function in PHP which returns the length of a given string. This is still a practical limit, but depends on system resources and architecture. In this article, we will see how to get the length of the string using strlen () function in PHP, along with understanding its implementation through the examples. If you specify -1 as the memory limit in your php.ini file, it stop checking and permits your script to use as much memory as the operating system will allocate. Note: If there are more signs than arguments, you must use placeholders. At the first sign, arg1 is inserted, at the second sign, arg2 is inserted, etc. The arg1, arg2, parameters will be inserted at percent () signs in the main string. If you need length of string in bytes (strlen cannot be trusted anymore because of mbstring. For example, with debian and ubuntu, it's included in libapache2-mod-php5, php5-cli, and php5-fpm. ex-mbstring is a non-default, but very common module. If the module is not found, Stringy will use symfony/polyfill-mbstring. In theory you can modify the source and rebuild PHP to change this default value. The printf () function outputs a formatted string. use Stringy \ Stringy as S Please note that Stringy relies on the mbstring module for its underlying multibyte support. Viewed 144k times 39 I have a string that is 141 characters in. 5.3.0, Prior versions treated arrays as the string Array. Ask Question Asked 11 years, 10 months ago. ![]() By making a micro-optimisation such as this early, you lose a communicative aspect to your code. However I disagree with your second assertion, the best way to compare string length in PHP is the obvious way. ![]() ![]() If you don't specify a memory limit in your php.ini file, it uses the default, which is compiled into the PHP binary. The length of the string on success, and 0 if the string is empty. Good job on highlighting the necessity of the mb extensions for handling UTF-8 strings. The memory limit defaults to 128MB in PHP 5.2, and 8MB in earlier releases. This limit is the memory_limit directive in the php.ini configuration file. 1) If the two strings have identical BEGINNING parts, they are trunkated from both strings. However, a PHP script has a limit on the total memory it can allocate for all variables in a given script execution, so this effectively places a limit on the length of a single string variable too. You can slurp in the contents of an entire file, for instance using file_get_contents() In PHP 5.x, strings were limited to 2 31-1 bytes, because internal code recorded the length in a signed 32-bit integer. On 32-bit builds and in earlier versions, a string can be as large as up to 2GB (2147483647 bytes maximum) Note: As of PHP 7.0.0, there are no particular restrictions regarding the length of a string on 64-bit builds.
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