每次都写SQL条件语句,很麻烦,容易出错,写了个函数整合到数据库类里,用来根据传入的数组,自动生成 SQL的where条件语句
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 as $v) { if(is_string($v)) { $in .= $in ? ",'$v'" : "'$v'"; }else { $in .= $in ? ",$v" : "$v"; } } $where .= " and $key in ($in)"; }else { $where .= " and $key = $val "; } } } return $where; }
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