php判斷資料庫是否連結成功的測試例子

php判斷資料庫是否連接成功的測試範例

如果出現資料庫設定不正確的錯誤，請看php與mysql的設定教學：

win7系統下如何設定php-Apache-mysql環境 http://www. cnblogs.com/myall/p/4744837.html

<form action="" method="post">
    <select name="host">
        <option value="localhost" selected>localhost</option>
        <option value="127.0.0.1">127.0.0.1</option>
    </select>
    <br><br><span>    user</span>:<input type="text" name="user" value=""><br><br><span>    pwd </span>:<input type="password" name="pwd" value=""><br><br>
    <input type="submit" value="connent">
    <input type="reset" value="reset">
</form>
<?<span>php 
    </span><span>error_reporting</span>(~<span>E_ALL</span><span>);
    </span><span>$host</span> = <span>$_POST</span>['host'<span>];
    </span><span>$user</span> = <span>$_POST</span>['user'<span>];
    </span><span>$pwd</span> = <span>$_POST</span>['pwd'<span>];
    </span><span>if</span>(<span>isset</span>(<span>$_POST</span>['host']) && <span>isset</span>(<span>$_POST</span>['user']) && <span>isset</span>(<span>$_POST</span>['pwd'<span>])){
        </span><span>if</span>(<span>strlen</span>(<span>$host</span>)<1 or <span>strlen</span>(<span>$user</span>)<1 or <span>strlen</span>(<span>$pwd</span>)<1<span>){
            </span><span>echo</span> "请完善相关数据库链接信息。"<span>;
            </span><span>exit</span>(0<span>);
        }
        </span><span>$conn</span> = <span>mysql_connect</span>(<span>$host</span>, <span>$user</span>, <span>$pwd</span>) or <span>die</span>("Error-数据库连接失败！"<span>);
        </span><span>if</span>(<span>$conn</span><span>){
            </span><span>echo</span> "OK&mdash;数据库连接成功！"<span>;
        }
    }
</span>?>

以上就介紹了php判斷資料庫是否連結成功的測試例子，包括了面向的內容，希望對PHP教學有興趣的朋友有幫助。