foreach用法

Question

幫我解釋運作原理和$diqusql.="'{$i}'"的含意

 $diqusql="diyu IN(";

        foreach($diqu as $ i){

            $diqusql.="'{$i}',";

        }

        $diqu rt )"

#

Answer 1

foreach是遍歷數組的語句，標準用法是：foreach（資料類型標識符in 表達式）

##e.g:

############################# ######$person = array(###   "name1" => "peter",###   "name2" => "lisi"###);###foreach ($person as $ person_value) {###   echo "姓名：" . $person_value;###   echo "<br>";###}###