How to determine if a folder exists in php and create it if it does not exist

php determines whether the folder exists, and creates it if it does not exist: first create a PHP sample file; then define a mkdirs method; finally use the "mkdirs("aa01");" method to determine the folder and create it Just create it.

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php determines whether the folder exists and then creates it

The code is as follows:

function mkdirs($dir, $mode = 0777) { if (is_dir($dir) || @mkdir($dir, $mode)) return TRUE; if (!mkdirs(dirname($dir), $mode)) return FALSE; return @mkdir($dir, $mode); } mkdirs("aa01");

The default mode is 0777, which means the maximum possible access rights.

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