file

Name:file

Category:File system

Programming Language:php

One-line Description:Read the file into an array.

Definition and usage

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

Similar tofile_get_contents() , the difference is file() returns the file as an array. Each unit in the array is a corresponding line in the file, including line breaks.

If it fails, false is returned.

实例

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

输出：

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?
)

grammar

 file ( path , include_path , context )

parameter	describe
path	Required. Specifies the file to be read.
include_path	Optional. If you also want to search for files in include_path, you can set this parameter to "1".
context	Optional. Specifies the environment for file handles. context is a set of options that can modify the behavior of a stream. If null is used, it will be ignored.

parameter

describe

path

Required. Specifies the file to be read.

include_path

Optional. If you also want to search for files in include_path, you can set this parameter to "1".

context

Optional. Specifies the environment for file handles.

context is a set of options that can modify the behavior of a stream. If null is used, it will be ignored.

illustrate

Support for context is added by PHP 5.0.0.

Each row in the returned array includes a line ending character, so if the line ending character is not needed, you also need to use rtrim() function.