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path_is_absolute ›

Since2.5.0
Deprecatedn/a
path_is_absolute ( $path )
Parameters:
  • (string) $path File path.
    Required: Yes
Returns:
  • (bool) True if path is absolute, false is not absolute.
Defined at:
Codex:

Test if a given filesystem path is absolute.

For example, '/foo/bar', or 'c:windows'.



Source

function path_is_absolute( $path ) {
	/*
	 * This is definitive if true but fails if $path does not exist or contains
	 * a symbolic link.
	 */
	if ( realpath( $path ) == $path ) {
		return true;
	}

	if ( strlen( $path ) == 0 || $path[0] == '.' ) {
		return false;
	}

	// Windows allows absolute paths like this.
	if ( preg_match( '#^[a-zA-Z]:\\\\#', $path ) ) {
		return true;
	}

	// A path starting with / or \ is absolute; anything else is relative.
	return ( $path[0] == '/' || $path[0] == '\\' );
}