mysqli bind_param（si）无法正常工作

Question

I am trying to insert a value to my database using mysqli bind_param.

My code:

<?php
$stmt = $mysqli->prepare("
INSERT INTO ".$db_table_prefix."u_nm  (uname,umobile) VALUES (?,?)");
$stmt->bind_param("si", $this->name, $this->mobile);
$stmt->execute();
$stmt->close();
?>

• uname is the users name, so it should be a string bind_param("s")
• umobile is the users mobile number so it should be bind_param("i")

But the whole number wont insert if I put umobile as ("i") ?

Example:

Lets say I insert the name Billy and the number 0739871169

Then inside the DB it would show up as:

Billy
739871169

instead of

Billy
0739871169

But if I change bind_param to ("ss") instead of ("si") it works fine,

But shouldn't a number be marked as ("i") or am I getting something wrong?

Answer 1

It accepts the number as an integer (ie. no leading zeros). You may add the "zerofill" option in the mobile phone field, or just accept it as a string.