php 删除mysql表中的数据

巴扎黑原创: 2016-11-23 10:43:561044浏览

php 删除mysql表中的数据

<html>
<head>
<title>Delete a Record from MySQL Database</title>
</head>
<body>
<?php
if(isset($_POST[&#39;delete&#39;]))
{
$dbhost = &#39;localhost:3306&#39;;
$dbuser = &#39;root&#39;;
$dbpass = &#39;root&#39;;
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
 die(&#39;Could not connect &#39;);
}
$emp_id = $_POST[&#39;emp_id&#39;];
$sql = "DELETE from employee ".
  "WHERE emp_id = $emp_id" ;
print "sql" . $sql;   
mysql_select_db(&#39;test_db&#39;);
$retval = mysql_query( $sql, $conn );
if(! $retval )
{
 die(&#39;Could not delete data&#39;);
}
echo "Deleted data successfully\n";
mysql_close($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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