How to use php file function

php file() function is used to read the entire file into an array, the syntax is file(path,include_path,context). Each element in the array is a corresponding line in the file, including newlines.

How to use the php file() function?

The file() function reads the entire file into an array.

Syntax:

file(path,include_path,context)

Parameters:

●path: required. Specifies the file to be read.

●include_path: optional. Set this parameter to '1' if you also want to search for files in include_path (in php.ini).

● context: optional. Specifies the environment for a file handle. context is a set of options that can modify the behavior of the stream. If NULL is used, it is ignored.

Note: Each row in the returned array includes line terminators, so if line terminators are not required, you need to use the rtrim() function.

Tip: As of PHP 4.3, this function is binary safe. (Meaning that both binary data (such as images) and character data can be written using this function.)

php file() function example

<?php
print_r(file("test.txt"));
?>

Output:

Array
(
[0] => Hello World. Testing testing!
[1] => Another day, another line.
[2] => If the array picks up this line,
[3] => then is it a pickup line?
)

The above is the detailed content of How to use php file function. For more information, please follow other related articles on the PHP Chinese website!