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In my buyBook.php I have a form that when it is submitted it will go to check_buy.php that will do the process of inserting. This is what I have in the buyBook.php

<div class="form-group" style="width:1px;width:1px;">
    <input type="hidden" name="user_id" value="<?php echo $_SESSION['user_id']?>" />
</div>

And this is what I have in the check_buy.php

    $user_id = $_SESSION['user_id'];
.
.
.

    $ins = mysql_query("INSERT INTO `librarydb`.`buy` (`user_id`) VALUES ('$user_id');");

Why it isn't inserting? I tried referencing what it is in here PHP $_SESSION error when posting to the database but still no luck.

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  • 1
    You're using session_start() somewhere? Commented Mar 2, 2015 at 16:03
  • 1
    If this field is inside a <form> tag, why aren't you use $_POST['user_id'] or $_GET['user_id'] instead of $_SESSION['user_id']; inside check_buy.php? Commented Mar 2, 2015 at 16:05
  • You @Abra are one hell of a magician! Thanks! I didn't think of it man. Commented Mar 2, 2015 at 16:07
  • @bcesars, can i just remove the supposed to be session that will pass to check_buy.php? and just start adding via session_start()? Commented Mar 2, 2015 at 16:08
  • @WTFZane, of course you can use session_start(). But this input hidden field will be useless for you. You can remove it as well. Commented Mar 2, 2015 at 16:10
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