PHP | fwrite() Function

PHP fwrite() Function


Hello dear readers! welcome back to another edition of our tutorial on PHP. In this tutorial guide, we are going to be discussing about the PHP fwrite() Function.

The 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 ] )


This built-in 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)


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

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