PHP is_file() Function
Definition and Usage
The is_file() function checks if the specified filename is a normal file.
Syntax
is_file(file)
| Parameter | Description |
|---|---|
| file | Required. Specifies the file to be checked. |
Description
If the file exists and is a normal file, it returns true.
Tips and Comments
Note:The result of this function will be cached. Please use clearstatcache() to clear the cache.
Instance
Example 1
<?php
$file = "test.txt";
if(is_file($file))
{
echo ("$file is a regular file");
}
else
{
echo ("$file is not a regular file");
}
?>
Output:
test.txt is a regular file
Example 2
<?php
var_dump(is_file('a_file.txt')) . "\n";
var_dump(is_file('/usr/bin/')) . "\n";
?>
Output:
bool(true) bool(false)
