# SplFileObject::fread

(PHP 5 >= 5.5.11, PHP 7, PHP 8)

SplFileObject::fread — Read from file

### 说明

public SplFileObject::fread(int `$length`): string|false

Reads the given number of bytes from the file.

### 参数

`length`

  The number of bytes to read.

### 返回值

Returns the string read from the file 或者在失败时返回 `false`.

### 示例

示例 #1 SplFileObject::fread() example

`<?php
// Get contents of a file into a string
$filename = "/usr/local/something.txt";
$file = new SplFileObject($filename, "r");
$contents = $file->fread($file->getSize());
?>`

### 注释

> 注意:

> Note that SplFileObject::fread() reads from the current position of the file pointer. Use SplFileObject::ftell() to find the current position of the pointer and SplFileObject::rewind() (or SplFileObject::fseek()) to rewind the pointer position.

### 参见

- fread() - 读取文件（可安全用于二进制文件）

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