PHP | ftruncate() 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 ftruncate() Function.

The PHP ftruncate() function truncates an open file to a specified length.

Syntax

Following below is the syntax to use this function -

bool ftruncate ( resource $handle , int $size )

READ: PHP | ftell() Function

This PHP function can take the filepointer, handle, and truncate the file to length size.

Return Value

This PHP function returns true on success, or false on failure.

Example

Try out the below example -

<?php
   //check filesize
   echo filesize("/PhpProject/sample.txt");
   echo "\n";
   $file = fopen("/PhpProject/sample.txt", "a+");
   
   ftruncate($file, 100);
   fclose($file);
   
   //Clear cache and check filesize again
   clearstatcache();
   
   echo filesize("/PhpProject/sample.txt");
?>

Output

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

49
100

READ: PHP | fseek() 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 fwrite() Function.

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