SplFileObject::fread

(PHP 5 >= 5.5.11)

SplFileObject::fread — Read 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）