PHP | fwrite() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP fwrite() Function.

The built-in PHP fwrite() function writes to an open file. This PHP function stops at the end of a file or when it gets to the specified length, whichever comes first.

Syntax

Following below is the syntax to use this function -

int fwrite ( resource $handle , string $string [, int $length ] )

READ: PHP | fstat() Function

This PHP function can write the content of a string to file stream pointed to by handle.

Return Value

This function returns the number of bytes written on success, and false on failure.

Example1

Try out the below example -

<?php
   $file = fopen("/PhpProject/sample.txt", "w");
   echo fwrite($file, "Hello Webdesigntutorialz!!!!");
   fclose($file);
?>

Output

When the above code is executed, it will produce the following result -

27

Example2

Try out the below example -

<?php
   $filename = "/PhpProject/sample.txt";
   $somecontent = "Add this to the file\n";

   if(is_writable($filename)) {
      if(!$handle = fopen($filename, 'a')) {
         echo "Cannot open file ($filename)";
         exit;
       }
   if(fwrite($handle, $somecontent) === FALSE) {
      echo "Cannot write to file ($filename)";
      exit;
   }
   echo "Success, wrote ($somecontent) to file ($filename)";
   fclose($handle);
   
   } else {
      echo "The file $filename is not writable";
   }
?>

Output

When the above code is executed, it will produce the following result -

Success, wrote (Add this to the file) to file (/PhpProject/sample.txt)

READ: PHP | ftruncate() Function

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP glob() Function.

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Thanks for reading and bye for now.