Let's talk about how to use the PHP zip_entry_filesize() function

zip_entry_filesize() function is a built-in function in PHP, used to read zip compressed files. The following article will introduce how to use the PHP zip_entry_filesize() function. I hope it will be helpful to everyone.

zip_entry_filesize() function is used to return the original file size of the zip archive entry before compression. The zip entry resource will be read and sent as argument to the zip_entry_filesize() function and on success it will return the value in bytes.

Usage:

int zip_entry_filesize( $zip_entry )

Parameters: This function accepts a mandatory single parameter $zip_entry. It is a parameter that specifies the zip code entry resource.

Return value: Returns byte value on success.

Errors and Exceptions:

• zip_entry_filesize() returns the size of the file in bytes only before successful compression, otherwise PHP warning.

• If the zip archive is invalid, the zip_entry_filesize() function will return an ER_OPEN error.

• If the zip archive is empty, the zip_entry_filesize() function returns an ER_NOZIP error.

The following example program is intended to illustrate the zip_entry_filesize() function in PHP:

Program 1:

Suppose there is a zip compressed file article.zip. The zip contains the following files:

content.xlsx

<?php 
  
// Opening a zip file 
$zip_handle = zip_open("C:/xampp/htdocs/article.zip"); 
  
// Reading a zip entry archive  
$zip_entry = zip_read($zip_handle);  
$file = zip_entry_name($zip_entry); 
  
// Reading file size before compression 
$size = zip_entry_filesize($zip_entry); 
  
// Displaying the file ans its size 
echo("File Name: " . $file . "<br>Size:" . $size . " Bytes"); 
zip_close($zip_handle); 
?>

Output:

File Name: article/content.xlsx
Size: 9420 Bytes

Program 2:

Suppose there is a zip compressed file article.zip. The zip contains the following files and directories:

Directory: img

• geeksforgeeks.png

• geeksforgeeks1.png

##content.xlsx

gfg.pdf

image.jpeg

<?php 
  
// Opening a zip file 
$zip_handle = zip_open("C:/xampp/htdocs/article.zip"); 
  
if(is_resource($zip_handle))  
{  
    while($zip_entry = zip_read($zip_handle))  
    {  
        $file = zip_entry_name($zip_entry); 
         
        // Checking the file size of a zip  
        // archive entry before compression   
        $size = zip_entry_filesize($zip_entry); 
        echo("File Name: " . $file . "<br>Size: " . $size . " Bytes<br>"); 
    }  
  
    // closing the zip archive 
    zip_close($zip_handle); 
}  
else
   echo("Zip archive cannot be read."); 
?>

Output:

File Name: article/content.xlsx
Size: 9420 Bytes
File Name: article/gfg.pdf
Size: 621936 Bytes
File Name: article/image.jpeg
Size: 159263 Bytes
File Name: article/img/
Size: 0 Bytes
File Name: article/img/geeksforgeeks.png
Size: 751 Bytes
File Name: article/img/geeksforgeeks1.png
Size: 337 Bytes