Introducing several PHP techniques for obtaining POST data_PHP tutorial

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Release: 2016-07-15 13:34:36
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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. $headers = ""; >
  13. trim
  14. (fgets($sock, 4096))) $headers .=
  15. "$strn"
  16. ; echo "n"; >; 🎜>.= fgets
  17. ($sock, 4096);
  18. fclose($sock); echo $body; PHP obtains POST data conclusion:
  19. 1. Use php://input to easily get the original POST data
  20. 2. $HTTP_RAW_POST_DATA only when the Content-Type type of POST is not recognized by PHP Valid
  21. 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.
  22. 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.

    www.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...
source:php.cn
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