Online PHP editor | rfc for pFYfM

@ 2014-04-06T06:49:54Z

<?php
function foo(){
		// sys_get_temp_dir is only available since PHP 5.2.1
		// http://php.net/manual/en/function.sys-get-temp-dir.php#94119
		if ( !function_exists('sys_get_temp_dir')) {
			if ($temp = getenv('TMP') ) {
				if ((!empty($temp)) && (file_exists($temp))) { return realpath($temp); }
			}
			if ($temp = getenv('TEMP') ) {
				if ((!empty($temp)) && (file_exists($temp))) { return realpath($temp); }
			}
			if ($temp = getenv('TMPDIR') ) {
				if ((!empty($temp)) && (file_exists($temp))) { return realpath($temp); }
			}

			// trick for creating a file in system's temporary dir
			// without knowing the path of the system's temporary dir
			$temp = tempnam(__FILE__, '');
			if (file_exists($temp)) {
				unlink($temp);
				return realpath(dirname($temp));
			}

			return null;
		}

		// use ordinary built-in PHP function
		//	There should be no problem with the 5.2.4 Suhosin realpath() bug, because this line should only
		//		be called if we're running 5.2.1 or earlier
		return realpath(sys_get_temp_dir());
}
echo $foo();

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined variable $foo in /in/pFYfM on line 32 Fatal error: Uncaught Error: Value of type null is not callable in /in/pFYfM:32 Stack trace: #0 {main} thrown in /in/pFYfM on line 32
Process exited with code 255.

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