SplFileObject::fread

(PHP 5 >= 5.5.11, PHP 7)

SplFileObject::freadRead from file

说明

public string SplFileObject::fread ( int $length )

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.

范例

Example #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

Note:

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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