Data can be deleted from MySQL tables by executing SQL DELETE statement through PHP function mysql_query.
Below is a simple example to delete records into employee table. To delete a record in any table it is required to locate that record by using a conditional clause. Below example uses primary key to match a record in employee table.
Example
Try out following example to understand delete operation. You need to provide an employee ID to delete an employee record from employee table.
<html> <head> <title>Delete a Record from MySQL Database</title> </head> <body> <?php if(isset($_POST['delete'])) { $dbhost = 'localhost:3036'; $dbuser = 'root'; $dbpass = 'rootpassword'; $conn = mysql_connect($dbhost, $dbuser, $dbpass); if(! $conn ) { die('Could not connect: ' . mysql_error()); } $emp_id = $_POST['emp_id']; $sql = "DELETE FROM employee WHERE emp_id = $emp_id" ; mysql_select_db('test_db'); $retval = mysql_query( $sql, $conn ); if(! $retval ) { die('Could not delete data: ' . mysql_error()); } echo "Deleted data successfully\n"; mysql_close($conn); }else { ?> <form method = "post" action = "<?php $_PHP_SELF ?>"> <table width = "400" border = "0" cellspacing = "1" cellpadding = "2"> <tr> <td width = "100">Employee ID</td> <td><input name = "emp_id" type = "text" id = "emp_id"></td> </tr> <tr> <td width = "100"> </td> <td> </td> </tr> <tr> <td width = "100"> </td> <td> <input name = "delete" type = "submit" id = "delete" value = "Delete"> </td> </tr> </table> </form> <?php } ?> </body> </html>
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