How to read zip content in php? (Use of zip_entry_read function)

This article mainly introduces how PHP obtains content from an opened zip file. There is a built-in function in PHP that can achieve this, namely the zip_entry_read() function.

zip_entry_read() function is a built-in function in PHP that is used to read content from an opened zip archive entry. The zip entry is being read, the number of bytes returned can be sent as a parameter to the zip_entry_read() function, if successful it will return the contents of the specified zip entry, otherwise a PHP warning will be returned.

Syntax:

string zip_entry_read( $zip_entry, $length )

Parameters:

The function accepts two parameters, as described below.

$zip_entry: This is a mandatory parameter that specifies the zip entry resource.

$length: It is an optional parameter that specifies the number of bytes to be returned.

Return value:

Returns the contents of the specified zip entry if successful, otherwise returns a PHP warning.

Errors and Exceptions:

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

The zip_entry_read() function returns an ER_NOZIP error if the zip archive is empty

The following program demonstrates the zip_entry_read() function in PHP:

Example 1 :

Assume that the zip file article.zip contains the file: geeks.txt

<?php 
  
// 打开zip文件
$zip_handle = zip_open("C:/xampp/htdocs/articles.zip"); 
   
// 读取zip存档项
while($zip_entry = zip_read($zip_handle))  
{  
    $resource = zip_entry_open($zip_handle, $zip_entry, "rb"); 
    $file_name = zip_entry_name($zip_entry); 
    
    if ($resource == true)  
    {  
   
        // 读取zip存档项的内容
        $file_content = zip_entry_read($zip_entry); 
        echo("File: " . $file_name . " successfully opened. <br>"); 
        echo("File content: " . $file_content); 
   
        // 关闭zip归档项
        zip_entry_close($zip_entry); 
    }  
    else
        echo("Failed to Open."); 
} 
  
// 关闭zip文件
zip_close($zip_handle); 
?>

Output:

File: articles/geeks successfully opened. 
File content: Welcome to GeeksforGeeks. It is a computer science portal
where you can learn programming.

Example 2:

Assume that the zip file article.zip contains the following files:

geeks.txt

geeks1.txt

<?php 
  
$zip_handle = zip_open("C:/xampp/htdocs/articles.zip"); 
   
while($zip_entry = zip_read($zip_handle))  
{  
    $resource = zip_entry_open($zip_handle, $zip_entry, "rb"); 
    $file_name = zip_entry_name($zip_entry); 
    if ($resource == true)  
    {  
   
        // 读取zip存档项的内容，最多可达150字节
        $file_content = zip_entry_read($zip_entry, 150); 
        echo("File Name: " . $file_name . " is opened Successfully. <br>"); 
        echo($file_content); 
        echo("<br><br>"); 
  
       
        zip_entry_close($zip_entry); 
    }  
    else
        echo("Failed to Open."); 
}  
  
zip_close($zip_handle); 
?>

Output:

File Name: articles/geeks is opened Successfully. 
Welcome to GeeksforGeeks. It is a computer science portal where you
can learn programming.

File Name: articles/geeks1 is opened Successfully. 
A Computer Science portal for geeks. It contains well written, well
thought and well-explained computer science and programming articles,
quizzes and many more.

Related recommendations: "PHP Tutorial"

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