使用PHP将HTML表插入并更新到SQL数据库时遇到了麻烦。不太确定我要去哪里错。它不会引发任何错误，但似乎也没有任何作用。 “获取”，“新建”和“删除”按钮都可以正常工作。我正在尝试插入和更新数据以及图像。谢谢
<?php
$servername = "e0771987cert4rebeccagangemi.myitoc.com.au";
$username = "******";
$password = "********";
$message = "";
$teamID = "";
$Name = "";
$Logo = "";
if(isset($_POST["RetrieveTeam"])) {
getSpecificTeam($_POST["teamID"]);
}
if (isset($_POST["NewTeam"])) {
resetTeamMaintenanceForm();
}
if (isset($_POST["InsertTeam"])) {
insertTeam();
}
if (isset($_POST["UpdateTeam"])) {
updateTeam($_POST["teamID"]);
header("Location: admin.php");
}
if (isset($_POST["DeleteTeam"])) {
deleteTeam($_POST["teamID"]);
header("Location: admin.php");
}
function resetTeamMaintenanceForm() {
try {
$teamID="";
$TeamName="";
$Logo = "";
}
catch(PDOException $e) {
echo "An error occured: " . $e->getMessage();
}
}
function getSpecificTeam($teamID) {
try {
$conn = new PDO("mysql:host=" . $GLOBALS ['servername'] . ";dbname=e0771987_Oaktown", $GLOBALS['username'], $GLOBALS['password']);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$statement = $conn->query("SELECT * FROM Teams WHERE teamID='" . $teamID."'");
$result=$statement->fetch();
if($result == null) { //ID doesn't exist
$GLOBALS['message'] = "The ID entered is not valid or does not exist";
} else {
$GLOBALS['teamID'] = $result[0];
$GLOBALS['Name'] = $result[1];
$GLOBALS['Logo'] = $result[2];
}
}
catch(PDOException $e) {
echo "An error occured:" . $e->getMessage();
}
$conn = null;
}
function insertTeam()
{
try {
$conn = new PDO("mysql:host=" . $GLOBALS['servername'] . ";dbname=e0771987_Oaktown", $GLOBALS['username'], $GLOBALS['password']);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$tmp_image_name = $_FILES["team_image"]["tmp_name"]; //get image file
if (!isset($tmp_image_name)) { //file hasn't been selected
echo "Please select a file to upload";
} else {
$check = getimagesize($tmp_image_name); // check if file is an image type
if ($check) { // if file is an image
$statement = $conn->prepare("INSERT INTO Teams (teamID, Name, Logo) VALUES (:teamID, :Name, :team_image)");
$statement->bindValue(":teamID", $_POST["teamID"]);
$statement->bindValue(":Name", $_POST["Name"]);
$statement->bindValue(":team_image", $tmp_image_name);
$result = $statement->execute();
if ($result) {
echo "Team record inserted into table successfully";
} else {
echo "The team record was not inserted";
}
} else {
echo "The file to be uploaded is not an image";
}
}
} catch(PDOException $e) {
echo "A problem occurred: " . $e->getMessage();
}
$conn = null;
}
function updateTeam($teamID) {
try {
$conn = new PDO("mysql:host=" . $GLOBALS['servername'] . ";dbname=e0771987_Oaktown", $GLOBALS['username'], $GLOBALS['password']);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$file_content = file_get_contents($_POST["Logo"]);
$statement = $conn->prepare("UPDATE Teams SET teamID=:teamID, Name=:Name, Logo=:Logo WHERE teamID='" . $teamID."'");
$statement->bindValue(":teamID", $_POST["teamID"]);
$statement->bindValue(":Name", $_POST["Name"]);
$statement->bindValue(":Logo", $tmp_image_name);
$result = $statement->execute();
if ($result) {
echo "Team record was updated";
} else {
echo "The team record was not updated";
}
}
catch(PDOException $e) {
echo "A problem occured: " . $e->getMessage();
}
$conn = null;
}
function deleteTeam($teamID) {
try {
$conn = new PDO("mysql:host=" . $GLOBALS['servername'] . ";dbname=e0771987_Oaktown", $GLOBALS['username'], $GLOBALS['password']);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$statement = $conn->prepare("DELETE FROM Teams WHERE teamID='" . $teamID. "'");
$result = $statement->execute();
if ($result) {
$GLOBALS['message'] = "Team record was deleted successfully";
} else {
$GLOBALS['message'] = "The Team record was not deleted";
}
}
catch(PDOException $e) {
echo "A problem occurred: " . $e->getMessage();
}
$conn = null;
}
?>
<div id="Edit Teams">
<p id="TableHeader2">Update or Delete Teams</p>
<table style="width:66%"
<tr>
<td style="width:30%"><b>teamID</b></td>
<td colspan=2><input type="text" style="width:350px" name="teamID" value="<?php echo $teamID;?>"></td>
</tr>
<tr>
<td style="width:30%"><b>Name</b></td>
<td colspan=2><input type="text" style="width:350px" name="Name" value="<?php echo $Name;?>"></td>
</tr>
<tr>
<td><b>Logo</b></td>
<?php
$image = NULL;
$image = $Logo;
if(isset($image) && !empty($image)) {
//echo "<td><img src='images/" . $teamRecord['Logo'] . "'/></td>";
echo '<td><img src="data:image/jpg;base64,'.base64_encode( $GLOBALS['Logo'] ).'"/></td>';
} else { ?>
<td><input type="file" name="logo" value=""></td>
<?php }
?>
<!--td><input type="file" name="logo" value=""></td-->
</tr>
</table><br>
<input class="button" type="submit" name="NewTeam" value="New">
<input class="button" type="submit" name="InsertTeam" value="Insert">
<input class="button" type="submit" name="RetrieveTeam" value="Get">
<input class="button" type="submit" name="UpdateTeam" value="Update">
<input class="button" type="submit" name="DeleteTeam" value="Delete">
</div>
答案 0 :(得分：-1)
如果您在一个文件中拥有完整的代码...您必须将其拆分为其他可读性更高的文件，这将使您轻松检测错误。
例如。
class PdoMysqlConnection
{
/**
* @var array
*/
private $settings;
/**
* @var \PDO|null
*/
private $linkid;
public function __construct($settings = array())
{
$this->settings = $settings;
return $this;
}
/**
* @param string $connection
* @return $this
*/
public function connect($connection){
try{
if(!isset($this->settings[$connection])){
throw new \Exception('The connection '.$connection.' is not defined in the parameters');
}
$this->linkid = new \PDO(
'mysql:dbname='.$this->settings[$connection]['db'].';host='.$this->settings[$connection]['host'],
$this->settings[$connection]['user'],
$this->settings[$connection]['password'],
array(\PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8")
);
if (!$this->linkid){
throw new \Exception("Cant not connect with Mysql.");
}
return $this;
}
catch (\Exception $ex) {
var_dump($ex->getMessage());
}
}
/**
* close connection
* @return $this
*/
public function close(){
try{
$this->linkid = null;
return $this;
} catch (\Exception $ex){
var_dump($ex->getMessage());
}
}
/**
* @param $sql
* @return \PDOStatement
*/
public function query($sql){
try{
$query = $this->linkid->prepare($sql);
$query->execute();
return $query;
}
catch (\Exception $ex){
var_dump('Error query: '. $query->queryString);
var_dump($ex->getMessage());
}
}
/**
* @param \PDOStatement $query
* @return bool
*/
public function hasResult($query){
if($query->rowCount() > 0){
return true;
} else {
return false;
}
}
/**
* @param \PDOStatement $query
* @param null $first
* @return array
*/
public function fetchArray($query, $first = null){
if($first){
return $query->fetch(\PDO::FETCH_ASSOC);
}
return $query->fetchAll(\PDO::FETCH_ASSOC);
}
/**
* @param \PDOStatement $query
* @param null $first
* @return array|object|\stdClass
*/
public function fecthObject($query, $first = null) {
if($first){
return $query->fetchObject();
}
$rows = array();
while ($row = $query->fetchObject()){
$rows[] = $row;
}
return $rows;
}
/**
* @return int|string
*/
public function getLastInsertedId(){
return $this->linkid->lastInsertId();
}
}
该课程将为您提供数据库事务的完整用法，下一个课程是Team类...
class Team{
private $pdoConnection;
public function __construct(){
$this->pdoConnection = new PdoMysqlConnection($GLOBALS['db_settings']);
/**
* mysql2 is the name of your connection, you can define multiple
* connection with a multiarray setting
*/
$this->pdoConnection->connect('mysql2');
return $this;
}
public function insertTeam(){
$this->pdoConnection->query("INSERT .... YOU CODE");
return $this->pdoConnection->getLastInsertedId();
}
public function selectTeam(){
$query = $this->pdoConnection->query("SELECT .... YOU CODE");
return $this->pdoConnection->fetchArray($query);
}
/**
* the rest of your code is in here
*/
}
他们是HTML ...
另一个提示...您必须知道stackoverflow社区没有完整的开发环境，因此您需要对问题更具体，并且不要提出类似的问题...我不知道为什么不起作用。