PHP | zip_entry_open() Function

The zip_entry_open() function is an inbuilt function in PHP which is used to open a zip entry archive for reading. Opening a file or a directory in a zip archive with the zip_entry_open function creates a new stream and establishes a connection between the stream and a file or a directory in a Zip Archive. The zip resource and the zip entry resource to be opened and sent as parameters to the zip_entry_open() function and it returns True on success and False on failure.

Syntax:

bool zip_entry_open( $zip, $zip_entry, $mode )

Parameters: This function accepts three parameters as mentioned above and described below:

$zip: It is a mandatory parameter which specifies the zip resource to be read.
$zip_entry: It is a mandatory parameter which specifies the zip entry resource.
$mode: It is an optional parameter which the access type of the required for the zip archive.

Return Value: It returns True on success or False on failure.

Errors And Exceptions:

The zip_entry_open() function returns an ER_OPEN error if the zip archive is invalid.
The zip_entry_open() function returns an ER_NOZIP error if the zip archive is empty.

Below programs illustrate the zip_entry_open() function in PHP:

Program 1:

Suppose a zip file articles.zip contains the following file:
geeks.txt

<?php 
  
// Opening a zip file 
$zip_handle = zip_open("C:/xampp/htdocs/articles.zip"); 
$zip_entry = zip_read($zip_handle); 
  
// Opening a zip entry archive  
zip_entry_open($zip_handle, $zip_entry, "rb"); 
$file = zip_entry_name($zip_entry); 
  
if($file == true) 
    echo("Zip file: " . $file . " open successfully <br>"); 
// Closing a zip entry archive  
$flag = zip_entry_close($zip_entry); 
if ($flag == true)  
    echo("Zip file: " . $file . " closed successfully"); 
else
    echo("Zip file: " . $file . " cannot be closed"); 
  
// Closeing zip file 
zip_close($zip_handle); 
?> 

Output:

Zip file: articles/geeks open successfully 
Zip file: articles/geeks closed successfully

Program 2:

Suppose a zip file articles.zip contains the following files:
geeks.txt
geeks1.txt

<?php 
  
// Opening a zip file 
$zip_handle = zip_open("C:/xampp/htdocs/articles.zip"); 
  
if(is_resource($zip_handle))  
{  
    while($zip_entry = zip_read($zip_handle))  
    {  
    
        // Opening a zip archive entry 
        $file = zip_entry_open($zip_handle, $zip_entry, "rb"); 
        $file_name = zip_entry_name($zip_entry); 
          
        if ($file == true)  
        {  
            echo("Zip file: " . $file_name . " open successfully"); 
            echo "<br>" ;  
    
            // Closing a zip archive entry 
            $flag = zip_entry_close($zip_entry); 
              
            if ($flag == true)  
                  echo("Zip file: " . $file_name . 
                      " closed successfully <br><br>"); 
            else
                echo("Zip file: " . $file_name .  
                         " cannot be closed <br><br>"); 
        }  
        else
            echo("Zip Entry Cannot be opened.<br>"); 
    }  
    
    // Closing a zip archive 
    zip_close($zip_handle); 
} 
else
    echo("Failed to Open" . $zip_handle ); 
?> 

Output:

Zip file: articles/geeks open successfully
Zip file: articles/geeks closed successfully 

Zip file: articles/geeks1 open successfully
Zip file: articles/geeks1 closed successfully

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Reference: http://php.net/manual/en/function.zip-entry-open.php

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