php SQL之where语句生成器

复制代码 代码如下://生成where字符串 function get_where($arg = null) { foreach ((array)$arg as $key => $val) { if(is_int($key)) { $where .= ” $val “; }else { if(is_string($val)) { if($val === null) { $where .= ” and $key is null “; }else { $where .= ” and $key = ‘$val’ “; } }elseif(is_array($val)) { foreach ($val