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(PHP 5 >= 5.1.0, PHP 7, PHP 8)

SplFileObject::fwriteWrite to file


public SplFileObject::fwrite(string $data, int $length = 0): int|false

Writes the contents of string to the file



The string to be written to the file.


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.

Valor Retornado

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

Registro de Alterações

Versão Descrição
7.4.0 The function now returns false instead of zero on failure.


Exemplo #1 SplFileObject::fwrite() example

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

O exemplo acima produzirá algo semelhante a:

Wrote 5 bytes to file

Veja Também

  • fwrite() - Escrita binary-safe em arquivos

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User Contributed Notes 1 note

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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