file_put_contents() function in PHP

The file_put_contents() function writes a string to a file. The function returns the number of bytes that were written to the file, or FALSE on failure.

Syntax

file_put_contents(file_path, data, flags, context)

Parameters

• file_path − The path of the file.

• data − Set the data to be written in the file:

• flags − Specifies how the file is opened or data has to be written:

  • FILE_USE_INCLUDE_PATH − Search for filename in the include directory.

  • FILE_APPEND − If file filename already exists, append the data to the file instead of overwriting it.

  • LOCK_EX − Acquire an exclusive lock on the file while proceeding to the writing.

  • FILE_TEXT − data is written in text mode. This flag cannot be used with FILE_BINARY. This flag is only available since PHP 6.

  • FILE_BINARY − data will be written in binary mode. This is the default setting and cannot be used with FILE_TEXT. This flag is only available since PHP 6.

• context − Set the behaviour of the stream.

Return

The file_put_contents() function returns the number of bytes that were written to the file, or FALSE on failure.

Example

<?php
   echo file_put_contents("new.txt","This is it!");
?>

Output

11

Let us see another example −

Example

<?php
   $file_path = one.txt';
   $myfile = file_get_contents($file_path);
   // Append
   $myfile .= "Demo line!\n";
   file_put_contents($file_path, $myfile);
?>

Output

10