PHP ZipArchive addFromString() Function

Last Updated : 26 Sep, 2022

The ZipArchive::addFromString() function is an inbuilt function in PHP that is used to add a file to the zip archive with its content.

Syntax:

bool ZipArchive::addFromString(
    string $name, 
    string $content, 
    int $flags = ZipArchive::FL_OVERWRITE
)

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

$name: This parameter holds the name of the file.
$content: This parameter holds the content that is used to create the entry. The content is used in a binary safe mode.
$flags: This parameter holds the bitmask that consists of ZipArchive::FL_OVERWRITE, ZipArchive::FL_ENC_GUESS, ZipArchive::FL_ENC_UTF_8, and ZipArchive::FL_ENC_CP437.

Return Value: This function returns “true” on success and “false” on failure.

Example 1: In this example, we will create a file and add the string to the file using the PHP ZipArchive::addFromString() function.

PHP

<?php 
  
    // Create a new ZipArchive class 
    $zip = new ZipArchive; 
  
    // Open a zip file 
    $file = $zip->open('geeks.zip'); 
  
    // If zip file is open 
    if ($file === TRUE) { 
  
        // Create new txt file and 
        // add string to the file 
        $zip->addFromString( 
            'GFG.txt',  
            'Welcome to GeeksforGeeks'
        ); 
  
        // Close the opened file 
        $zip->close(); 
        echo 'File Added Successfully.'; 
    }  
    else 
    { 
        echo 'Failed to Adding file.'; 
    } 
?>

Output:

Example 2: In this example, we will create multiple files and add the string to those files using PHP ZipArchive::addFromString() function.

PHP

<?php 
  
    // Create a new ZipArchive class 
    $zip = new ZipArchive; 
  
    // Open a zip file 
    $file = $zip->open('geeks.zip', ZipArchive::CREATE); 
  
    // If zip file is open 
    if ($file === TRUE) { 
  
        // Create new txt file and 
        // add string to the file 
        $zip->addFromString( 
            'GFG1.txt',  
            'Welcome to GeeksforGeeks'
        ); 
  
        $zip->addFromString( 
            'GFG2.txt',  
            'A computer science portal'
        ); 
  
        $zip->addFromString( 
            'GFG3.txt',  
            'Welcome to GeeksforGeeks'
        ); 
  
        // Close the opened file 
        $zip->close(); 
        echo 'File Added Successfully.'; 
    }  
    else 
    { 
        echo 'Failed to Add files.'; 
    } 
?>