PHP file() funktionen
Definition och användning
file() funktionen läser hela filen in i en array.
Och file_get_contents() Liknande, men skillnaden är att file() returnerar filen som en array. Varje element i arrayen är en rad i filen, inklusive nyckelraden.
Om misslyckas, returnera false.
syntax
file(path,include_path,context)
| parameters | description |
|---|---|
| path | Required. Specifies the file to be read. |
| include_path | Optional. If you also want to search for files in the include_path, you can set this parameter to "1". |
| context |
Optional. Specifies the environment of the file handle. context is a set of options that can modify the behavior of the stream. If null is used, it is ignored. |
description
for context support was added in PHP 5.0.0.
Each line in the returned array includes a line ending, so if you do not need line endings, you also need to use the rtrim() function.
Tips and comments
注释：Starting from PHP 4.3.0, you can use file_get_contents() Read the file into a string and return it.
注释：Starting from PHP 4.3.0, the file() function can be used safely for binary files.
注释：If the PHP cannot recognize the line ending of a Macintosh file when reading a file, you can activate the auto_detect_line_endings runtime configuration option.
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? )
