PHP combined with js to implement click on hyperlink to perform delete confirmation operation_PHP tutorial

php combined with js to implement click on hyperlink to perform deletion confirmation operation

First connect to the database and query the database data:

The code is as follows:

$dbms='mysql'; //Database type. For developers, if they use different databases, they only need to change this and don’t need to remember so many functions
$host='localhost'; //Database host name
$dbName='db_database19'; //Database used
$user='root'; //Database connection username
$pass='root'; //Corresponding password
$dsn="$dbms:host=$host;dbname=$dbName";
try {
$pdo = new PDO($dsn, $user, $pass); //Initializing a PDO object means creating a database connection object $pdo
$query="select * from tb_pdo_mysql"; //Define SQL statement
$result=$pdo->prepare($query); //Prepare query statement
$result->execute(); //Execute the query statement and return the result set
while($res=$result->fetch(PDO::FETCH_ASSOC)){ //while loop outputs the query result set, and sets the result set to the associated index
?>





delete

}
} catch (PDOException $e) {
die ("Error!: " . $e->getMessage() . "
");
}
?>

Call a javascript method at the hyperlink deletion point and pass the record id. The js method is:

The code is as follows:

<script><br> function del(_id) {<br> if (confirm("Confirm deletion"))<br> {<br> window.location.href="index.php?conn_id="+_id; //Refresh this page<br> }<br> }<br> </script>

Delete database record code:

The code is as follows:

if(@$_GET['conn_id']!=""){
$dbms='mysql'; //Database type. For developers, if they use different databases, they only need to change this and don’t need to remember so many functions
$host='localhost'; //Database host name
$dbName='db_database19'; //Database used
$user='root'; //Database connection username
$pass='root'; //Corresponding password
$dsn="$dbms:host=$host;dbname=$dbName";
try {
$pdo = new PDO($dsn, $user, $pass); //Initializing a PDO object means creating a database connection object $pdo
$pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
$query="delete from tb_pdo_mysql where Id=:id";
$result=$pdo->prepare($query); //Prepared statement
$result->bindParam(':id',$_GET['conn_id']); //Bind updated data
$result->execute();
} catch (PDOException $e) {
echo 'PDO Exception Caught.';
echo 'Error with the database:
';
echo 'SQL Query: '.$query;
echo '

';<br>
echo "Error: " . $e->getMessage(). "<br/>";<br>
echo "Code: " . $e->getCode(). "<br/>";<br>
echo "File: " . $e->getFile(). "<br/>";<br>
echo "Line: " . $e->getLine(). "<br/>";<br>
echo "Trace: " . $e->getTraceAsString(). "<br/>";<br>
echo '

';
}
}
?>

This code should be placed at the beginning of the body part of the html page, or at worst, before the query record code.

http://www.bkjia.com/PHPjc/904792.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/904792.htmlTechArticlephp combines with js to implement click on the hyperlink to perform the delete confirmation operation. First, connect to the database and query the database data: The code is as follows: ?php $dbms='mysql'; //Database type, for developers,...