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20 November, 2018

Get and Post Method-PHP Form in Hindi

 Programing Coderfunda     November 20, 2018     php     No comments   

PHP में HTML Form से data collect करने के लिए $_GET और $_POST इन दो superglobals variables का इस्तेमाल किया जाता है |

HTML Form Using Post Method

यहाँ पर इस HTML Form में दो input fields दिए गए है और एक submit button दिया गया है |
<html>
<head>
<title>HTML Form</title>
</head>
<body>
<form action="simple.php" method="post">
Name: <input type="text" name="name">
Address: <input type="text" name="address">
<input type="submit">
</form>
</body>
</html>

यहाँ पर जब User form में name और addres fill करता है और submit button को click करता है तो form का name और address का data POST method से simple.php इस file पर send किया जाता है |
simple.php
<html>
<head>
</head>
<body>
Name : <?php echo $_POST["name"]; ?><br />
Address : <?php echo $_POST["address"]; ?>
</body>
</html>

अगर HTMl form में for eg. name के input field में Rakesh Kumar ये value दी और Address के input field में Delhi ये value दी तो,
Output :
Name : Rakesh Kumar
Address : Delhi

HTML Form using Get Method

Get Method से भी HTML Form का data collect किया जाता है |
Get Method की खासियत ये है कि अगर User; field पर कोई data देता है तो वो collect भी किया जाता है और वो data browser के address bar पर आ जाता है | इससे User dynamic URLs भी बना सकता है |

यहाँ पर इस HTML Form में दो input fields दिए गए है और एक submit button दिया गया है |
<html>
<head>
<title>HTML Form</title>
</head>
<body>
<form action="simple.php" method="get">
Name: <input type="text" name="name">
Address: <input type="text" name="address">
<input type="submit">
</form>
</body>
</html>

Form submit करने से पहले URL
http://localhost/PHP_Tutorial/simple.html

<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><script> (adsbygoogle = window.adsbygoogle || []).push({}); </script>
यहाँ पर जब User form में name और addres fill करता है और submit button को click करता है तो form का name और address का data GET method से simple.php इस file पर send किया जाता है |
Form submit करने के बाद URL
http://localhost/PHP_Tutorial/simple.php?name=Rakesh+Kumar&address=Delhi

simple.php
URL में get method से शुरुआत में ? और name और values की जोड़ीयों को &(ampersand) से seperate किया जाता है |
<html>
<head>
</head>
<body>
Name : <?php echo $_GET["name"]; ?><br />
Address : <?php echo $_GET["address"]; ?>
</body>
</html>

get method के Advantages और Disadvantages

get method से submit किया हुआ सब variable के नाम और values URL पर दिखाई देती है |
get method से sen किये जानेवाली information की limit होती है |
get method से password या कुछ sensitive data send नहीं किया जा सकता |
get variables या query string के साथ आये URLs के pages को bookmarks किये जा सकते है |
get method में binary data को send करने के लिए इस्तेमाल नहीं किया जाता | For eg. Uploading Files

post method के Advantages और Disadvantages

post method; get method से secured होता है |
post method से send किया हुआ data URL पर दिखाई नहीं देता |
post method से send किया हुआ data URL पर दिखाई नहीं देता इसके कारण इस page को bookmark भी नहीं जा सकता |
post method से binary data को sen किया जा सकता है | For eg. File Uploading

Using $_REQUEST Variable

$_REQUEST का इस्तेमाल as $_GET, $_POST और $_COOKIE के लिए किया जाता है |
<html>
<head>
<title>HTML Form</title>
</head>
<body>
<form action="simple.php" method="post">
Name: <input type="text" name="name">
Address: <input type="text" name="address">
<input type="submit">
</form>
</body>
</html>

simple.php
<html>
<head>
</head>
<body>
Name : <?php echo $_REQUEST["name"]; ?><br />
Address : <?php echo $_REQUEST["address"]; ?>
</body>
</html>

Output :
Name : Rakesh Kumar
Address : Delhi
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