file_exists
Description
The file_exists of Filesystem for PHP checks whether a file or directory exists.
Syntax
file_exists( string $filename ): bool
Parameters
filename
Path to the file or directory.
On windows, use //computername/share/filename or \computername\share\filename to check files on network shares.
Return
Returns true if the file or directory specified by filename exists; false otherwise.
NOTE: This function will return false for symlinks pointing to non-existing files.
NOTE: The check is done using the real UID/GID instead of the effective one.
NOTE: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.
Examples
1 · filename · false
<? $filename = ""; $return = file_exists($filename); var_export($return);
false
2 · filename · true
<? $filename = $_SERVER["DOCUMENT_ROOT"] . "/assets/txt/1.txt"; $return = file_exists($filename); var_export($return);
true
Links
Filesystem
- basename
- chgrp
- chmod
- chown
- clearstatcache
- copy
- dirname
- disk_free_space
- disk_total_space
- diskfreespace
- fclose
- feof
- fflush
- fgetc
- fgetcsv
- fgets
- file
- file_get_contents
- file_put_contents
- fileatime
- filectime
- filegroup
- fileinode
- filemtime
- fileowner
- fileperms
- filesize
- filetype
- flock
- fnmatch
- fopen
- fpassthru
- fputcsv
- fputs
- fread
- fscanf
- fseek
- fstat
- ftell
- ftruncate
- fwrite
- glob
- is_dir
- is_executable
- is_file
- is_link
- is_readable
- is_uploaded_file
- is_writable
- is_writeable
- lchgrp
- lchown
- link
- linkinfo
- lstat
- mkdir
- move_uploaded_file
- pathinfo
- pclose
- popen
- readfile
- readlink
- realpath
- realpath_cache_get
- realpath_cache_size
- rename
- rewind
- rmdir
- set_file_buffer
- stat
- symlink
- tempnam
- tmpfile
- touch
- umask
- unlink