我正在使用mysqli在一个php文件中运行的数据库上运行InnoDB一些准备好的语句。在1号线以及以下错误附近? AND section_num = ? AND dept = ? AND semester = ? AND year = ?
:PHP和mysqli:使用预处理语句选择多个条件
Call to a member function bind_param() on a non-object.
大部分的语句都工作得很好,但我对此一直在我的select语句返回语法错误多个条件select语句,具体
这里的代码片段:
if (!$rs = $mysqli->query("SELECT id FROM courses WHERE course_num = ? AND section_num = ? AND dept = ? AND semester = ? AND year = ?")) {
echo "Select Query Failed!: (" . $mysqli->errno . ") ". $mysqli->error;
}
if(!$rs->bind_param("ssssi", mysqli_real_escape_string($mysqli,$course_num), mysqli_real_escape_string($mysqli,$section_num),
mysqli_real_escape_string($mysqli,$dept), mysqli_real_escape_string($mysqli,$semester), mysqli_real_escape_string($mysqli,$year))) {
echo "Select Binding parameters failed: (" . $rs->errno .") " . $rs->error;
}
if (!$rs->execute()) {
echo "Execute select failed: (" . $rs->errno . ") " . $rs->error;
}
如何形成这个语句来检索基础上,4个输入ID任何建议将是巨大的。谢谢!