PHP --- ajax transmits the POST value (including html tags) to the submitted page. data is lost or garbled.

: This article mainly introduces the data loss or garbled characters when PHP --- ajax transmits POST values (including html tags) to the submitted page. For more information about PHP tutorials, see. Problem

?? But when you open the file in the browser, data loss or garbled characters may occur.

Cause

?? This is because the text contains html tags. when using POST to pass values, some characters such as '&' in the value content will affect the extraction of variable values, cause garbled characters or data loss.

Solution

?? Encode the html text to be passed, and then pass it over. Then you can use the browser to automatically decode it.

Encoding functions

?? The encodeURIComponent () function can encode a string as a URI component. This method does not encode ASCII letters and numbers, and does not encode these ASCII punctuation marks :-_.! ~ *'().
Other characters (such :;/? : @ & =+ $, # The punctuation marks used to separate URI components) are all replaced by one or more hexadecimal escape sequences. If the URI component contains a separator, such? And #, the encodeURIComponent () method should be used to encode each component, and the other can be encoded using the encodeURI (URIstring) function.

Var content = UM. getEditor ('myeditor '). getAllHtml ();/* encode the content of the passed value */var htmlcontent = encodeURIComponent (content); alert (htmlcontent ); var postStr = 'news _ title = '+ news_title +' & htmlc/span> + htmlcontent + '& sid =' + Math. random (); alert (postStr); ajax (".. /news_submit_hand.php ", postStr, function (result) {if (result = 'submit _ success ') {alert (" News submitted successfully! Close the editor using the close button in the upper right corner. ");} Else {alert (" An error occurred while submitting the news! ");}});

Problems to be solved after encoding

?? A title is included in the News Submission. to insert the title to the body of the html text, you need to insert the title after the mark. The encoding is changed to % 3 Cbody % 3E. There are solutions:
?? First, use the % 3 Cbody % 3E string to split the original string into two strings at the specified position, and then split the first half of the string + the string to be inserted + the second half of the string, form a new string to implement the function;
?? Code implementation:

Functionstr_insert ($ str, $ I, $ substr) {for ($ j = 0; $ j <$ I; $ j ++) {$ startstr. = $ str [$ j];} for ($ j; $ j
  
   
Publisher: admin Release date: ". date (" Y-m-d H: I: s ", $ timestamp )."
   

   

   "; $ First_pos = stripos ($ htmlcontent," % 3 Cbody % 20% 3E "); $ first_pos + = 13; $ content = str_insert ($ htmlcontent, $ first_pos, $ insert_html); fwrite ($ myfile, $ content); fclose ($ myfile );
  

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