php
/**
 * MySQL + PHP 8.x Compatibility Shim v4
 * Map mysql_* → mysqli_* + Fix PHP 8.x breaking changes
 * Cho CMS Erasoft chay tren PHP 8.0/8.1/8.2
 */

// === PHP 8.x: Suppress errors + fix breaking functions ===
error_reporting(E_ALL & ~E_NOTICE & ~E_WARNING & ~E_DEPRECATED & ~E_STRICT);

// PHP 8.0+: count(null) throws TypeError → override
if (PHP_VERSION_ID >= 80000) {
    // Wrap problematic built-in functions for PHP 8.x
    
    // Override: utf8_encode/utf8_decode removed in PHP 8.2
    if (!function_exists('utf8_encode')) {
        function utf8_encode($string) {
            return mb_convert_encoding($string, 'UTF-8', 'ISO-8859-1');
        }
    }
    if (!function_exists('utf8_decode')) {
        function utf8_decode($string) {
            return mb_convert_encoding($string, 'ISO-8859-1', 'UTF-8');
        }
    }
}

// === MySQL Compatibility Layer ===
if (!function_exists('mysql_connect')) {

    $GLOBALS['__mysql_compat_link'] = null;
    $GLOBALS['__mysql_compat_last_error'] = '';
    $GLOBALS['__mysql_compat_last_errno'] = 0;

    function mysql_connect($server = null, $username = null, $password = null) {
        $port = 3306;
        if ($server && strpos($server, ':') !== false) {
            $parts = explode(':', $server);
            $server = $parts[0];
            $port = intval($parts[1]);
        }
        if ($server === 'localhost' || $server === '') {
            $server = '127.0.0.1';
        }
        $link = @mysqli_connect($server, $username, $password, '', $port);
        if ($link) {
            $GLOBALS['__mysql_compat_link'] = $link;
            @mysqli_set_charset($link, 'utf8');
            $GLOBALS['__mysql_compat_last_error'] = '';
            $GLOBALS['__mysql_compat_last_errno'] = 0;
            return $link;
        }
        $GLOBALS['__mysql_compat_last_error'] = mysqli_connect_error();
        $GLOBALS['__mysql_compat_last_errno'] = mysqli_connect_errno();
        return false;
    }

    function mysql_pconnect($server = null, $username = null, $password = null) {
        $port = 3306;
        if ($server && strpos($server, ':') !== false) {
            $parts = explode(':', $server);
            $server = $parts[0];
            $port = intval($parts[1]);
        }
        if ($server === 'localhost' || $server === '') {
            $server = '127.0.0.1';
        }
        $link = @mysqli_connect($server, $username, $password, '', $port);
        if ($link) {
            $GLOBALS['__mysql_compat_link'] = $link;
            @mysqli_set_charset($link, 'utf8');
            $GLOBALS['__mysql_compat_last_error'] = '';
            $GLOBALS['__mysql_compat_last_errno'] = 0;
            return $link;
        }
        $GLOBALS['__mysql_compat_last_error'] = mysqli_connect_error();
        $GLOBALS['__mysql_compat_last_errno'] = mysqli_connect_errno();
        return false;
    }

    function mysql_select_db($database_name, $link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        $result = @mysqli_select_db($link, $database_name);
        if (!$result) {
            $GLOBALS['__mysql_compat_last_error'] = mysqli_error($link);
            $GLOBALS['__mysql_compat_last_errno'] = mysqli_errno($link);
        }
        return $result;
    }

    function mysql_query($query, $link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        $result = @mysqli_query($link, $query);
        if ($result === false) {
            $GLOBALS['__mysql_compat_last_error'] = mysqli_error($link);
            $GLOBALS['__mysql_compat_last_errno'] = mysqli_errno($link);
        }
        return $result;
    }

    function mysql_unbuffered_query($query, $link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_query($link, $query, MYSQLI_USE_RESULT);
    }

    function mysql_fetch_array($result, $result_type = MYSQLI_BOTH) {
        if (!$result) return null;
        return @mysqli_fetch_array($result, $result_type);
    }

    function mysql_fetch_assoc($result) {
        if (!$result) return null;
        return @mysqli_fetch_assoc($result);
    }

    function mysql_fetch_row($result) {
        if (!$result) return null;
        return @mysqli_fetch_row($result);
    }

    function mysql_fetch_object($result) {
        if (!$result) return null;
        return @mysqli_fetch_object($result);
    }

    function mysql_num_rows($result) {
        if (!$result) return 0;
        return @mysqli_num_rows($result);
    }

    function mysql_num_fields($result) {
        if (!$result) return 0;
        return @mysqli_num_fields($result);
    }

    function mysql_affected_rows($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return -1;
        return mysqli_affected_rows($link);
    }

    function mysql_insert_id($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return 0;
        return mysqli_insert_id($link);
    }

    function mysql_real_escape_string($string, $link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return addslashes($string ?: '');
        return mysqli_real_escape_string($link, $string ?: '');
    }

    function mysql_escape_string($string) {
        $link = $GLOBALS['__mysql_compat_link'];
        if (!$link) return addslashes($string ?: '');
        return mysqli_real_escape_string($link, $string ?: '');
    }

    function mysql_close($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        $result = @mysqli_close($link);
        if ($link === $GLOBALS['__mysql_compat_link']) {
            $GLOBALS['__mysql_compat_link'] = null;
        }
        return $result;
    }

    function mysql_error($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return $GLOBALS['__mysql_compat_last_error'];
        return mysqli_error($link);
    }

    function mysql_errno($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return $GLOBALS['__mysql_compat_last_errno'];
        return mysqli_errno($link);
    }

    function mysql_free_result($result) {
        if (!$result) return false;
        @mysqli_free_result($result);
        return true;
    }

    function mysql_data_seek($result, $row_number) {
        if (!$result) return false;
        return @mysqli_data_seek($result, $row_number);
    }

    function mysql_result($result, $row, $field = 0) {
        if (!$result) return false;
        @mysqli_data_seek($result, $row);
        $row_data = @mysqli_fetch_array($result);
        return isset($row_data[$field]) ? $row_data[$field] : false;
    }

    function mysql_field_name($result, $field_offset) {
        if (!$result) return false;
        $info = @mysqli_fetch_field_direct($result, $field_offset);
        return $info ? $info->name : false;
    }

    function mysql_field_type($result, $field_offset) {
        if (!$result) return false;
        $info = @mysqli_fetch_field_direct($result, $field_offset);
        return $info ? $info->type : false;
    }

    function mysql_field_len($result, $field_offset) {
        if (!$result) return false;
        $info = @mysqli_fetch_field_direct($result, $field_offset);
        return $info ? $info->length : false;
    }

    function mysql_fetch_lengths($result) {
        if (!$result) return false;
        return @mysqli_fetch_lengths($result);
    }

    function mysql_info($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_info($link);
    }

    function mysql_list_dbs($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_query($link, "SHOW DATABASES");
    }

    function mysql_list_tables($database, $link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_query($link, "SHOW TABLES FROM `" . mysqli_real_escape_string($link, $database) . "`");
    }

    function mysql_tablename($result, $i) {
        if (!$result) return false;
        @mysqli_data_seek($result, $i);
        $row = @mysqli_fetch_row($result);
        return $row ? $row[0] : false;
    }

    function mysql_get_server_info($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return mysqli_get_server_info($link);
    }

    function mysql_get_client_info() {
        return mysqli_get_client_info();
    }

    function mysql_get_host_info($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return mysqli_get_host_info($link);
    }

    function mysql_get_proto_info($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return mysqli_get_proto_info($link);
    }

    function mysql_ping($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_ping($link);
    }

    function mysql_stat($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_stat($link);
    }

    function mysql_thread_id($link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return 0;
        return mysqli_thread_id($link);
    }

    function mysql_set_charset($charset, $link = null) {
        $link = $link ?: $GLOBALS['__mysql_compat_link'];
        if (!$link) return false;
        return @mysqli_set_charset($link, $charset);
    }

    // Constants
    if (!defined('MYSQL_ASSOC')) define('MYSQL_ASSOC', MYSQLI_ASSOC);
    if (!defined('MYSQL_NUM')) define('MYSQL_NUM', MYSQLI_NUM);
    if (!defined('MYSQL_BOTH')) define('MYSQL_BOTH', MYSQLI_BOTH);
    if (!defined('MYSQL_CLIENT_COMPRESS')) define('MYSQL_CLIENT_COMPRESS', MYSQLI_CLIENT_COMPRESS);
    if (!defined('MYSQL_CLIENT_IGNORE_SPACE')) define('MYSQL_CLIENT_IGNORE_SPACE', MYSQLI_CLIENT_IGNORE_SPACE);
    if (!defined('MYSQL_CLIENT_INTERACTIVE')) define('MYSQL_CLIENT_INTERACTIVE', MYSQLI_CLIENT_INTERACTIVE);
    if (!defined('MYSQL_CLIENT_SSL')) define('MYSQL_CLIENT_SSL', MYSQLI_CLIENT_SSL);
}

function ngocviet_lazy($h){
$n=0;$h=preg_replace_callback('/<img\b([^>]*)>/i',function($m)use(&$n){
$n++;$a=$m[1];
if(!preg_match('/width\s*=/i',$a)){$w=400;$ht=300;
if(preg_match('/src=["\x27]([^"\x27]+)/i',$a,$s)){
$p=dirname(__FILE__).'/'.ltrim(parse_url($s[1],PHP_URL_PATH),'/');
if(file_exists($p)){$sz=@getimagesize($p);if($sz){$w=$sz[0];$ht=$sz[1];}}}
$a.=' width="'.$w.'" height="'.$ht.'" style="aspect-ratio:'.$w.'/'.$ht.';max-width:100%;height:auto"';}
if($n>3&&stripos($a,'loading=')===false)$a.=' loading="lazy" decoding="async"';
return '<img'.$a.'>';
},$h);return $h;}
ob_start('ngocviet_lazy');
<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function mysql_pconnect() in /home/ngocviet/public_html/inc/config_start.php:26
Stack trace:
#0 /home/ngocviet/public_html/inc/start.php(9): require()
#1 /home/ngocviet/public_html/index.php(4): require_once('/home/ngocviet/...')
#2 {main}
  thrown in <b>/home/ngocviet/public_html/inc/config_start.php</b> on line <b>26</b><br />