[英]Table will not update, however showing successful
我是MYSQL的新手
當我嘗試更新數據庫時,結果顯示成功,但未顯示項目。 請有人幫忙。 我已嘗試通過將帖子轉換為會話變量來延續它,但沒有任何區別。
update_ac.php
$name = $_POST['name'];
$lastname = $_POST['review'];
// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// update data in mysql database
$sql="UPDATE reviews SET name='$name', review='$lastname' WHERE id='$id'";
$result=mysql_query($sql);
// if successfully updated.
if($result){
echo "Successful";
echo "<BR>";
echo "<a href='list_reviews.php'>View result</a>";
}
else {
echo "ERROR";
echo "Welcome ". $_POST['name']. "<br />";
echo $lastname;
}
?>
update.php
// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// get value of id that sent from address bar
$id=$_GET['id'];
// Retrieve data from database
$sql="SELECT * FROM $tbl_name WHERE id='$id'";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);
?>
<?php include "includes/header.php"; ?>
<div id="bodywrap">
<div id="leftcol">
<h1>Update the form</h1>
<form name="form1" method="post" action="update_ac.php">
<label>Name</label>
<input name="name" type="text" id="name" value="<? echo $rows['name']; ?>">
<br />
<label>Review</label>
<input name="lastname" type="text" id="lastname" value="<? echo $rows['review']; ?>" size="15">
<br />
<input name="id" type="hidden" id="id" value="<? echo $rows['id']; ?>">
<br />
<input type="submit" name="Submit" value="Submit">
</form>
<?php
// close connection
mysql_close();
?>
$name = $_POST['name'];
$lastname = $_POST['review'];
您是否注意到您使用了$ id而不是$ _POST ['id']或$ _REQUEST ['id']或$ _GET ['id']? 缺少此:
$id = $_POST['id'];
SQL之所以起作用是因為它對找到的每個id =“''進行DID更新,因此這不是錯誤。
另外,正如其他人指出,使用mysqli,mysql擴展很危險,可能很快就會被棄用。
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