修改一个在PHP7.1和 7.2 环境下的报错 - ��ѡ��̳

/**
* 获取客户端IP地址
* @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
* @param boolean $adv 是否进行高级模式获取（有可能被伪装）
* @return mixed
*/
function ip($type = 0,$adv=false) {
$type = $type ? 1 : 0;
static $ip = NULL;
if ($ip !== NULL) return $ip[$type];
if($adv){
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
$pos = array_search('unknown',$arr);
if(false !== $pos) unset($arr[$pos]);
$ip = trim($arr[0]);
}elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
}elseif (isset($_SERVER['REMOTE_ADDR'])) {
$ip = $_SERVER['REMOTE_ADDR'];
}
}elseif (isset($_SERVER['REMOTE_ADDR'])) {
$ip = $_SERVER['REMOTE_ADDR'];
}
// IP地址合法验证
$long = sprintf("%u",ip2long($ip));
$ip = $long ? array($ip, $long) : array('0.0.0.0', 0);
return $ip[$type];
}

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/**
* 解析模板
*
* @param $str 模板内容
* @return ture
*/
public function template_parse($str) {
$str = preg_replace ( "/\{template\s+(.+)\}/", "<?php include template(\\1); ?>", $str );
$str = preg_replace ( "/\{include\s+(.+)\}/", "<?php include \\1; ?>", $str );
$str = preg_replace ( "/\{php\s+(.+)\}/", "<?php \\1?>", $str );
$str = preg_replace ( "/\{if\s+(.+?)\}/", "<?php if(\\1) { ?>", $str );
$str = preg_replace ( "/\{else\}/", "<?php } else { ?>", $str );
$str = preg_replace ( "/\{elseif\s+(.+?)\}/", "<?php } elseif (\\1) { ?>", $str );
$str = preg_replace ( "/\{\/if\}/", "<?php } ?>", $str );
//for 循环
$str = preg_replace("/\{for\s+(.+?)\}/","<?php for(\\1) { ?>",$str);
$str = preg_replace("/\{\/for\}/","<?php } ?>",$str);
//++ --
$str = preg_replace("/\{\+\+(.+?)\}/","<?php ++\\1; ?>",$str);
$str = preg_replace("/\{\-\-(.+?)\}/","<?php ++\\1; ?>",$str);
$str = preg_replace("/\{(.+?)\+\+\}/","<?php \\1++; ?>",$str);
$str = preg_replace("/\{(.+?)\-\-\}/","<?php \\1--; ?>",$str);
$str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\}/", "<?php \$n=1;if(is_array(\\1)) foreach(\\1 AS \\2) { ?>", $str );
$str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}/", "<?php \$n=1; if(is_array(\\1)) foreach(\\1 AS \\2 => \\3) { ?>", $str );
$str = preg_replace ( "/\{\/loop\}/", "<?php \$n++;}unset(\$n); ?>", $str );
$str = preg_replace ( "/\{([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*$([^{}]*)$)\}/", "<?php echo \\1;?>", $str );
$str = preg_replace ( "/\{\\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*$([^{}]*)$)\}/", "<?php echo \\1;?>", $str );
$str = preg_replace ( "/\{(\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/", "<?php echo \\1;?>", $str );
$str = preg_replace_callback("/\{(\\$[a-zA-Z0-9_\[\]\'"\$\x7f-\xff]+)\}/s", array($this, 'addquote'),$str);
$str = preg_replace ( "/\{([A-Z_\x7f-\xff][A-Z0-9_\x7f-\xff]*)\}/s", "<?php echo \\1;?>", $str );
$str = preg_replace_callback("/\{pc:(\w+)\s+([^}]+)\}/i", array($this, 'pc_tag_callback'), $str);
$str = preg_replace_callback("/\{\/pc\}/i", array($this, 'end_pc_tag'), $str);
$str = "<?php defined('IN_PHPCMS') or exit('No permission resources.'); ?>" . $str;
return $str;
}
/**
* 转义 // 为 /
*
* @param $var 转义的字符
* @return 转义后的字符
*/
public function addquote($matches) {
$var = '<?php echo '.$matches[1].';?>';
return str_replace ( "\\"", """, preg_replace ( "/\[([a-zA-Z0-9_\-\.\x7f-\xff]+)\]/s", "['\\1']", $var ) );
}
public static function pc_tag_callback($matches) {
return self::pc_tag($matches[1],$matches[2], $matches[0]);;
}

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public static function pc_tag($op, $data, $html) {
preg_match_all("/([a-z]+)\=["]?([^"]+)["]?/i", stripslashes($data), $matches, PREG_SET_ORDER);
$arr = array('action','num','cache','page', 'pagesize', 'urlrule', 'return', 'start');
$tools = array('json', 'xml', 'block', 'get');
$datas = array();
$tag_id = md5(stripslashes($html));
//可视化条件
$str_datas = 'op='.$op.'&tag_md5='.$tag_id;
foreach ($matches as $v) {
$str_datas .= $str_datas ? "&$v[1]=".($op == 'block' && strpos($v[2], ') === 0 ? $v[2] : urlencode($v[2])) : "$v[1]=".(strpos($v[2], ') === 0 ? $v[2] : urlencode($v[2]));
if(in_array($v[1], $arr)) {
${$v[1]} = $v[2]; //php7下的可变变量得用大括号
continue;
}
$datas[$v[1]] = $v[2];
}

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