path_is_absolute()
最后更新于:2021-11-27 18:43:25
path_is_absolute( string$path)Test if a given filesystem path is absolute.
参数
- $path
-
(string) (Required) File path.
响应
(bool) True if path is absolute, false is not absolute.
源文件
文件: gc-includes/functions.php
function path_is_absolute( $path ) {
/*
* Check to see if the path is a stream and check to see if its an actual
* path or file as realpath() does not support stream wrappers.
*/
if ( gc_is_stream( $path ) && ( is_dir( $path ) || is_file( $path ) ) ) {
return true;
}
/*
* 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] );
}