function querySelect($select,$where='',$order='',$limit='',$offset=0,$group='',having=''){$sql="select $select from $table".($where !=''?"where $where":'')}谁能解释一下问号是什么意思?最后一个单引号是什么意思?整句怎么理解?
function querySelect($select,$where='',$order='',$limit='',$offset=0,$group='',having=''){$sql="select $select from $table".($where !=''?"where $where":'')}谁能解释一下问号是什么意思?最后一个单引号是什么意思?整句怎么理解?
function querySelect($select,$where='',$order='',$limit='',$offset=0,$group='',having=''){$sql="select $select from $table".($where !=''?"where $where":'')}谁能解释一下问号是什么意思?最后一个单引号是什么意思?整句怎么理解?
$str='<html><head></head><body>123</body></body></head></html>';
$pos[0]=strpos($str,'<body>');
$pos[1]=strpos($str,'</body>');
echo substr($str,$pos[0],$pos[1]-$pos[0]);
($where !='' ? "where $where" : '')
$where !='' ? "where $where" : ''
$result = true ? $str : '';