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is_file(3) [php man page]

IS_FILE(3)								 1								IS_FILE(3)

is_file - Tells whether the filename is a regular file

SYNOPSIS
bool is_file (string $filename) DESCRIPTION
Tells whether the given file is a regular file. PARAMETERS
o $filename - Path to the file. RETURN VALUES
Returns TRUE if the filename exists and is a regular file, FALSE otherwise. 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
Example #1 is_file(3) example <?php var_dump(is_file('a_file.txt')) . " "; var_dump(is_file('/usr/bin/')) . " "; ?> The above example will output: bool(true) bool(false) 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_link(3). PHP Documentation Group IS_FILE(3)

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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)
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