if(empty($_REQUEST[‘cont‘]) or is_null($_REQUEST[‘cont‘])){ ???????$sql = "select * from tb_article order by ".$fields." desc"; ???}else{ ???????$querymem = $_REQUEST[‘querymem‘]; ???????$signslt = $_REQUEST[‘signslt‘]; ???????$cont = $_REQUEST[‘cont‘]; ???????$sql = ‘select * from tb_article ‘; ??????//firsttime ???????if(in_array($querymem,array(‘id‘,‘hitnum‘,‘renum‘,‘examine‘))){ ???????????$sql .= " where ".$querymem." ".$signslt." ".$cont; ???????????????//表示不懂 ???????????????????}else if(in_array($querymem,array(‘firsttime‘))){ ???????????if($signslt==‘=‘){ ???????????$sql.= "where ".$querymem." like ‘%".$cont."%‘"; ???????????}else{ ???????????$sql .= " where ".$querymem." ".$signslt." ‘".$cont."‘"; ???????????} ???????}else if(in_array($querymem,array(‘typename‘,‘title‘,‘author‘))){ ???????????if($signslt == ‘exac‘){ ???????????????$sql .= "where ".$querymem." = ‘".$cont."‘"; ???????????}else if($signslt == ‘mist‘){ ???????????????$sql .= "where ".$querymem." like ‘%".$cont."%‘"; ???????????} ???????}
----------------------------------------------------------不明白的地方php
原文地址：https://www.cnblogs.com/robot-s/p/8732728.html