What potential pitfalls can arise when trying to use sftp in PHP without the necessary modules installed?

Without the necessary modules installed, attempting to use sftp in PHP can lead to errors such as "Call to undefined function ssh2_connect()". To solve this issue, you need to ensure that the ssh2 extension is installed and enabled in your PHP environment. You can do this by installing the ssh2 extension using PECL and adding "extension=ssh2.so" to your php.ini file. 

// Check if ssh2 extension is installed and enabled
if (!function_exists('ssh2_connect')) {
    die('The ssh2 extension is not installed. Please install it before using sftp in PHP.');
}

// Your sftp code here

Keywords

sftp PHP modules installation errors

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