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PHP file_get_contents () function

PHP Filesystem Reference Manual Complete PHP Filesystem Reference Manual

Definition and Usage

file_get_contents () reads the entire file into a string.

This function is used to read the contents of the file into a string in the preferred method. If the server operating system support, will use memory mapping techniques to enhance performance.

grammar

file_get_contents(path,include_path,context,start,max_length)

参数 描述
path 必需。规定要读取的文件。
include_path 可选。如果您还想在 include_path(在 php.ini 中)中搜索文件的话,请设置该参数为 '1'。
context 可选。规定文件句柄的环境。context 是一套可以修改流的行为的选项。若使用 NULL,则忽略。
start 可选。规定在文件中开始读取的位置。该参数是 PHP 5.1 中新增的。
max_length 可选。规定读取的字节数。该参数是 PHP 5.1 中新增的。


Tips and Notes

Tip: This function is binary safe.(Meaning that the binary data (such as images) and character data can use this function to write.)


Examples

<?php
echo file_get_contents("test.txt");
?>

The code above will output:

This is a test file with test text.


PHP Filesystem Reference Manual Complete PHP Filesystem Reference Manual