检索数据插入，也将输入的数据

Question

什么问题

$id = $_POST['name']; //prevents types of SQL injection 
$newCandidatePosition = $_POST['position']; //prevents types of SQL injection 
$sql = mysql_query("INSERT INTO tbCandidates(`student_id`,`candidate_name`, `candidate_gender`,`candidate_grade`,`candidate_section`,`candidate_position('$newCandidatePosition'))"." SELECT `id`,`student_name`, `student_gender`,`student_grade`,`candidate_section`"." FROM tbstudent WHERE id='$id'"); 

Answer 1

如果你想包括$newCandidatePosition值到您要插入的数据，包括其作为SELECT字面列表，而不是插入到列的列表中。

$id = mysql_real_escape_string($_POST['name']); //prevents types of SQL injection 
$newCandidatePosition = mysql_real_escape_string($_POST['position']); //prevents types of SQL injection 
$sql = mysql_query("INSERT INTO tbCandidates(`student_id`,`candidate_name`, `candidate_gender`,`candidate_grade`,`candidate_section`,`candidate_position`) 
    SELECT `id`,`student_name`, `student_gender`,`student_grade`,`candidate_section`, '$newCandidatePosition' 
    FROM tbstudent WHERE id='$id'");