Introducing several PHP techniques for obtaining POST data_PHP tutorial

For an experienced

(1) PHP obtains POST data when the form is submitted in POST mode

$_POST The value can be obtained with php://input, $HTTP_RAW_POST_DATA is empty
$_POST organizes the submitted data in an associative array, and performs encoding processing on it, such as urldecode, and even encoding conversion.
php://input can obtain unprocessed POST raw data through file reading through the input stream

(2) PHP obtains POST data after fsockopen submits POST data

1. $sock = fsockopen("localhost", 80,
   $errno, $errstr, 30);
2. if (!$sock) die("$errstr ($errno)n");
3. $data = "txt=" . urlencode("中") .
   "&bar =" .urlencode("Value for Bar");
4. fwrite($sock, "POST / posttest/response
   .php HTTP/1.0rn");
5. fwrite($sock, "Host: localhostrn");
6. fwrite($sock, "Content-type: applicat
   ion/x-www-form-urlencodedrn");
7. fwrite($sock, "Content-length: " .
   strlen($data) . "rn");
8. fwrite($sock, "Accept: */*rn");
9. fwrite($sock, "rn");
10. fwrite($sock, "$datarn");
11. fwrite ($sock, "rn");
12. $headers = ""; >
trim
13. (fgets($sock, 4096))) $headers .=
    
"$strn"
14. ; echo "n"; >; 🎜>.= fgets
15. ($sock, 4096);
16. fclose($sock); echo $body; PHP obtains POST data conclusion:
1. Use php://input to easily get the original POST data
17. 2. $HTTP_RAW_POST_DATA only when the Content-Type type of POST is not recognized by PHP Valid
For example, POST data usually submitted through page forms cannot be extracted through $HTTP_RAW_POST_DATA. Its encoding type attribute (enctype attribute) is application/x-www-form-urlencoded, multipart/form-data.
18. Note: Even if you explicitly change the enctype attribute in the page to a type that is not recognized by PHP, it will still be invalid. Since the form submission encoding attribute is form-limited, unrecognizable types will be considered to be submitted in the default encoding (i.e. application/x-www-form-urlencoded) 3. $_POST only when the data is in application/x PHP can obtain POST data only when the -www-form-urlencoded type is submitted.
    http://www.bkjia.com/PHPjc/445978.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445978.htmlTechArticleFor an experienced (1) form POST submission case, PHP gets POST data $_POST with php:/ /input can get the value, $HTTP_RAW_POST_DATA is empty, $_POST is in associative array mode...