英[faɪl] 美[faɪl]
vt. File (divorce proceedings or other lawsuits); file...; file; publish and send to the newspaper
vi. Send (report to the newspaper); walk in a line; make an application
n. File; file (folder); column; file
Third person singular: files Plural: files Present participle: filing past tense: filed past participle: filed
php is_file() function syntax
How to use the is_file() function?
php is_file() function is used to determine whether the given file name is a normal file. The syntax is bool is_file (string $filename). If the file exists and is a normal file, it returns TRUE. Otherwise return FALSE.
Function: Judge whether the given file name is a normal file
Syntax: bool is_file (string $filename)
Parameters:
| Parameters | Description |
| filename | Required, the path of the file. |
Description: If the file exists and is a normal file, return TRUE, otherwise return FALSE.
php is_file() function example
<?php
var_dump(is_file('a_file.txt'));
echo "<br>";
var_dump(is_file('/usr/bin/'));
?>Run instance»
Click the "Run instance" button to view the online instance
Output:
bool(false) bool(false)