SplFileObject
PHP Manual

SplFileObject::fwrite

(PHP 5 >= 5.1.0, PHP 7)

SplFileObject::fwriteWrite to file

说明

public int SplFileObject::fwrite ( string $str [, int $length ] )

Writes the contents of string to the file

参数

str

The string to be written to the file.

length

If the length argument is given, writing will stop after length bytes have been written or the end of string is reached, whichever comes first.

返回值

Returns the number of bytes written, or NULL on error.

范例

Example #1 SplFileObject::fwrite() example

<?php
$file 
= new SplFileObject("fwrite.txt""w");
$written $file->fwrite("12345");
echo 
"Wrote $written bytes to file";
?>

以上例程的输出类似于:

Wrote 5 bytes to file

参见


SplFileObject
PHP Manual