您好,登錄后才能下訂單哦!
php中如何使用Header函數(shù),很多新手對(duì)此不是很清楚,為了幫助大家解決這個(gè)難題,下面小編將為大家詳細(xì)講解,有這方面需求的人可以來學(xué)習(xí)下,希望你能有所收獲。
具體如下:
在php中,可以使用Header函數(shù)做一些有趣的事情,用戶驗(yàn)證就是其中一個(gè)很有意思的功能。具體用法:
Header("WWW-Authenticate: Basic realm="USER LOGIN""); Header("HTTP/1.0 401 Unauthorized");
在頁首設(shè)計(jì)這兩個(gè)Header函數(shù),頁面在載入前會(huì)出現(xiàn)一個(gè)登錄框,要求輸入用戶名和密碼。習(xí)慣了在頁面登錄的我們,是否覺得這樣的登錄很原始,又很新奇呢?
為了獲取從這個(gè)對(duì)話框中傳來的用戶名和密碼,需要用到php提供的兩個(gè)特殊變量$PHP_AUTH_USER和$PHP_AUTH_PW,要這樣使用這兩個(gè)特殊變量好像需要在php.ini中設(shè)置相關(guān)的選項(xiàng),不然就只能像下面這樣引用:
$_SERVER['PHP_AUTH_USER'] $_SERVER['PHP_AUTH_PW']
獲取到用戶提交上來的用戶名和密碼之后,要怎樣處理邏輯就跟我們一般的程序處理沒有什么區(qū)別了。下面提供兩個(gè)例程供參考:
<?php if(!isset($PHP_AUTH_USER)) { Header("WWW-authenticate: basic realm="XXX""); Header("HTTP/1.0 401 Unauthorized"); $title="Login Instructions"; ?> <blockquote> In order to enter this section of the web site, you must be an XXX subscriber. If you are a subscriber and you are having trouble logging in, please contact <a href="mailto:support@xxx.com">support@xxx.com</a>. </blockquote> <?php exit; } else { mysql_pconnect("localhost","nobody","") or die("Unable to connect to SQL server"); mysql_select_db("xxx") or die("Unable to select database"); $user_id=strtolower($PHP_AUTH_USER); $password=$PHP_AUTH_PW; $query = mysql_query("select * from users where user_id='$user_id' and password='$password'"); if(!mysql_num_rows($query)) { Header("WWW-authenticate: basic realm="XXX""); Header("HTTP/1.0 401 Unauthorized"); $title="Login Instructions"; ?> <blockquote> In order to enter this section of the web site, you must be an XXX subscriber. If you are a subscriber and you are having trouble logging in, please contact <a href="mailto:support@xxx.com">support@xxx.com</a>. </blockquote> <?php exit; } $name=mysql_result($query,0,"name"); $email=mysql_result($query,0,"email"); mysql_free_result($query); } ?>
另外一個(gè)參考的例程:
<?php //assume user is not authenticated $auth = false; $user = $_SERVER['PHP_AUTH_USER']; $pass = $_SERVER['PHP_AUTH_PW']; if ( isset($user) && isset($pass) ) { //connect to db include 'db_connect.php'; //SQL query to find if this entered username/password is in the db $sql = "SELECT * FROM healthed_workshop_admin WHERE user = '$PHP_AUTH_USER' AND pass = '$PHP_AUTH_PW'"; //put the SQL command and SQL instructions into variable $result = mysql_query($sql) or die('Unable to connect.'); //get number or rows in command; if more than 0, row is found $num_matches = mysql_num_rows($result); if ($num_matches !=0) { //matching row found authenticates user $auth = true; } } if (!$auth) { header('WWW-Authenticate: Basic realm="Health Ed Presentation Admin"'); header('HTTP/1.0 401 Unauthorized'); echo 'You must enter a valid username & password.'; exit; } else { echo 'Success!'; } ?>
看完上述內(nèi)容是否對(duì)您有幫助呢?如果還想對(duì)相關(guān)知識(shí)有進(jìn)一步的了解或閱讀更多相關(guān)文章,請(qǐng)關(guān)注億速云行業(yè)資訊頻道,感謝您對(duì)億速云的支持。
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如果涉及侵權(quán)請(qǐng)聯(lián)系站長(zhǎng)郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。