is_executable(3) [php man page]

IS_EXECUTABLE(3)							 1							  IS_EXECUTABLE(3)

is_executable - Tells whether the filename is executable

SYNOPSIS

       bool is_executable (string  $filename)

DESCRIPTION

	Tells whether the filename is executable.

PARAMETERS

	      o $filename
		- Path to the file.

RETURN VALUES

	Returns TRUE if the filename exists and is executable, or FALSE on error.

EXAMPLES

       Example #1

	      is_executable(3) example

	      <?php

	      $file = '/home/vincent/somefile.sh';

	      if (is_executable($file)) {
		  echo $file.' is executable';
	      } else {
		  echo $file.' is not executable';
	      }

	      ?>

ERRORS
/EXCEPTIONS
	Upon failure, an E_WARNING is emitted.

NOTES

       Note

	      The results of this function are cached. See clearstatcache(3) for more details.

       Tip

	      As  of  PHP  5.0.0,  this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine
	      which wrappers support stat(3) family of functionality.

SEE ALSO

       is_file(3), is_link(3).

PHP Documentation Group 													  IS_EXECUTABLE(3)

IS_LINK(3)								 1								IS_LINK(3)

is_link - Tells whether the filename is a symbolic link

SYNOPSIS

       bool is_link (string  $filename)

DESCRIPTION

	Tells whether the given file is a symbolic link.

PARAMETERS

	      o $filename
		- Path to the file.

RETURN VALUES

	Returns TRUE if the filename exists and is a symbolic link, FALSE otherwise.

EXAMPLES

       Example #1

	      Create and confirm if a file is a symbolic link

	      <?php
	      $link = 'uploads';

	      if (is_link($link)) {
		  echo(readlink($link));
	      } else {
		  symlink('uploads.php', $link);
	      }
	      ?>

ERRORS
/EXCEPTIONS
	Upon failure, an E_WARNING is emitted.

NOTES

       Note

	      The results of this function are cached. See clearstatcache(3) for more details.

       Tip

	      As  of  PHP  5.0.0,  this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine
	      which wrappers support stat(3) family of functionality.

SEE ALSO

       is_dir(3), is_file(3), readlink(3).

PHP Documentation Group 														IS_LINK(3)