SplFileObject::fwrite

(PHP 5 >= 5.1.0)

SplFileObject::fwriteWrite to file

說明

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

Writes the contents of string to the file

參數

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.

回傳值

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

範例

Example #1 SplFileObject::fwrite() example

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

上例的輸出類似於:

Wrote 5 bytes to file

參見

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User Contributed Notes 1 note

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15
bas dot hilbers at tribal-im dot com
10 years ago
Your \SplFileObject will not throw an exception when trying to write to a non-writeable stream!

I forgot to set the second parameter on my \SplFileObject constructor (the mode), costing me minutes to figure out why nothing was writter by the fwrite method...

Just to let you know!
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