How to delete data from sql with pdo?

Question

Hello I have search the web all day trying to find example of deleting data when I use pdo but all i found its MySQL and MySQLi and I am stuck i can't see what I am missing when I run it it give me /search.php?del=Array(id). This its my code please help

<?php 
//load database connection
    $host = "localhost";
    $user = "abcd";
    $password = "******";
    $database_name = "abcd";
    $pdo = new PDO("mysql:host=$host;dbname=$database_name", $user, $password, array(
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
    ));
// Search from MySQL database table




$search=$_POST['search'];
$query = $pdo->prepare("select * from wfuk where post_code LIKE '%$search%' OR telephone LIKE '%$search%'  LIMIT 0 , 10");
$query->bindValue(1, "%$search%", PDO::PARAM_STR);
$query->execute();
// Display search result
?>
<html>
<head>
<title> How To Create A Database Search With MySQL & PHP Script | Tutorial.World.Edu </title>
</head>
<body>
<form action="search.php" method="post">
Search: <input type="text" name="search" placeholder=" Search here ... "/>
<input type="submit" value="Submit" />
</form>
<?php
         if (!$query->rowCount() == 0) {
		 		echo "Search found :<br/>";
				echo "<table style=\"font-family:arial;color:#333333;\">";	
                echo "<tr>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">First Name</td>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">Last Name</td>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">Trade</td>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">Post Code</td>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">Telephone</td>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">Comments</td>
				<td style=\"border-style:solid;border-width:1px;border-color:#98bf21;background:#98bf21;\">To be use</td></tr>";			
            while ($results = $query->fetch()) {
				
				echo "<tr><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";			
                echo $results['first_name'];
				
				echo "</td><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";			
                echo $results['last_name'];
				
				echo "</td><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";			
                echo $results['trade'];
				
				echo "</td><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";			
                echo $results['post_code'];
				
				echo "</td><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";
                echo $results['telephone'];
				
				echo "</td><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";
                echo $results['comments'];
				
				echo "</td><td style=\"border-style:solid;border-width:1px;border-color:#98bf21;\">";
				echo $results['id'];
                //this its my button for delete
				echo("<button onclick=\"location.href='search.php?del=$results(id)'\">delete user</button>"); 
                
				echo "</td></tr>";				
            }
				echo "</table>";	

        } else {
            echo 'Nothing found';
        }
?>

This '%$search%' isn't a placeholder. php.net/manual/en/pdo.prepared-statements.php I don't know if that works or not if it does it is opening you to injections because it is not being parameterized. — chris85
– chris85, Commented Jul 16, 2015 at 21:44
mr chris85 i am having problem whit delete data not search appreciate the time and its just a hobby i do it all for knowledge — Remus Afrem
– Remus Afrem, Commented Jul 16, 2015 at 21:49
The SQL for the delete query will be the same regardless of whether you are using pdo, mysqli, mysql, or whatever. But there does not appear to be a delete query in your code, only a select. This is part of why you are having trouble deleting. — Don't Panic
– Don't Panic, Commented Jul 16, 2015 at 21:53
Well you're 3/4 of the way there why not finish off doing it properly? Where are you running a delete I don't see that anywhere? — chris85
– chris85, Commented Jul 16, 2015 at 21:53

Your Common Sense · Accepted Answer · 2020-02-26 09:01:42Z

10

I would start with something like this:

    $con =  new PDO( "mysql:host=".$dbHost.";"."dbname=".$dbName, $dbUsername, $dbUserPassword); 
    $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    $sql = "DELETE FROM `table` WHERE id = ?";        
    $q = $con->prepare($sql);

    $response = $q->execute(array($id));

edited Feb 26, 2020 at 9:01

Your Common Sense

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answered Jul 16, 2015 at 21:58

Juan Serrats

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2 Comments

Remus Afrem Over a year ago

just before i am 100% sure do i need to set this on a new file or can i use it on the same page and thx a loot

Juan Serrats Over a year ago

You can do it on the same page, you'll need to update all the $variables with your data: $dbHost, $dbName, $dbUsername, $dbUserPassword, $table and $id (if you want to delete based on the id) Good luck! :)

Omar Faruk · Accepted Answer · 2022-11-30 07:08:43Z

0

It's work for me.

$id = $_GET['id'];
$conn->exec("DELETE FROM mrbs_entry WHERE id = $id");

edited Nov 30, 2022 at 7:08

answered Nov 30, 2022 at 6:45

Omar Faruk

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1 Comment

mickmackusa Over a year ago

Any explanation with this snippet dump? This looks topical: Difference between PDO->query() and PDO->exec()

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