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December 24, 2015 14:49
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This Demo script is a javascript solution to circumvent the max_input_vars limit of PHP for http://stackoverflow.com/a/19107646/1069083
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| <html><head> | |
| <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> | |
| <title>circumvent max_input_vars limit in PHP</title></head> | |
| <body> | |
| <a href="circumvent_max_input_vars.php">restart</a><br> | |
| <?php | |
| /** | |
| * do the same than parse_str without max_input_vars limitation: | |
| * Parses $string as if it were the query string passed via a URL and sets variables in the current scope. | |
| * @param $string array string to parse (not altered like in the original parse_str(), use the second parameter!) | |
| * @param $result array If the second parameter is present, variables are stored in this variable as array elements | |
| * @return bool true or false if $string is an empty string | |
| * | |
| * @author rubo77 at https://gist.github.com/rubo77/6821632 | |
| **/ | |
| function my_parse_str($string, &$result) { | |
| if($string==='') return false; | |
| $result = array(); | |
| // find the pairs "name=value" | |
| $pairs = explode('&', urldecode($string)); | |
| foreach ($pairs as $pair) { | |
| // use the original parse_str() on each element | |
| parse_str($pair, $params); | |
| $k=key($params); | |
| if(!isset($result[$k])) $result+=$params; | |
| else $result[$k]+=$params[$k]; | |
| } | |
| return true; | |
| } | |
| if(!empty($_REQUEST)) { | |
| echo count($_REQUEST,1)." num request variables<br> | |
| <pre>"; | |
| if(isset($_REQUEST['serialized_data'])){ | |
| if(empty($_REQUEST['serialized_data']) and $_REQUEST["num_elements_already_disabled"]) echo "you pressed back and reload - no data sent<br>"; | |
| my_parse_str($_REQUEST['serialized_data'], $params); | |
| echo count($params,1)." serialized variables:<br>"; | |
| unset($_REQUEST['serialized_data']); | |
| $_REQUEST+=$params; | |
| } | |
| var_export($_REQUEST); | |
| echo "</pre>"; | |
| }else { | |
| ?> | |
| <h1>hidden form 1 1100 vars</h1> | |
| <form method="post" id="f2"> | |
| <input type="text" value="v"a" name="somequote"><? | |
| for($i=0;$i<1100;$i++) echo '<input type="hidden" name="v'.$i.'" value="v'.$i.'">'; | |
| ?><textarea name="bla">blubb</textarea> | |
| <select name="bla"><option>test</select> | |
| <input type="submit"> | |
| </form> | |
| <h1>visible post form 2 with strange characters</h1> | |
| <form method="post" id="f" action=""><? | |
| for($i=0;$i<5;$i++) echo '<input type="text" name="v'.$i.'" value="v'.$i.'/"ä>">'; | |
| ?><input type="submit" name="sadosa"> | |
| </form> | |
| <h1>multidimensional form</h1> | |
| <form method="post" id="m"><? | |
| for($i=0;$i<5;$i++) echo '<input type="hidden" value="v'.$i.'" name="v'.$i.'">'; | |
| for($i=0;$i<5;$i++){ | |
| for($k=0;$k<2;$k++){ | |
| echo '<input type="hidden" name="m['.$i.']['.$k.']" value="m'.$i.'_'.$k.'">'; | |
| } | |
| } | |
| echo '<input type="hidden" name="m['.$i.']" value="last">'; | |
| for($i=0;$i<3;$i++){ | |
| for($k=0;$k<2;$k++){ | |
| echo '<input type="hidden" name="x['.$i.']['.$k.']" value="x'.$i.'_'.$k.'">'; | |
| } | |
| }?><input type="submit"> | |
| </form> | |
| <h1>get form</h1> | |
| <form method="get" id="g"><? | |
| for($i=0;$i<10;$i++) echo '<input type="hidden" name="v'.$i.'" value="v'.$i.'">'; | |
| ?><input type="submit"> | |
| </form> | |
| <? | |
| } | |
| ?> | |
| <script> | |
| // this disables all form elements and creates only one new element that contains all data serialized | |
| $('form[method="post"]').submit(function() { | |
| var num_form_elements=$(this).find('input, select, textarea').not('[type="submit"]').length; | |
| var num_elements_already_disabled=$(this).find('input:disabled, select:disabled, textarea:disabled').length; | |
| enabled=(num_form_elements-num_elements_already_disabled); | |
| if($('textarea[name="serialized_data"]', this).length > 0) { | |
| alert("Backbutton is not supported yet!"); | |
| return false; | |
| } | |
| if($('textarea[name="serialized_data"]', this).length > 0 || enabled<=0) { | |
| alert("Reload of the form is not supported yet!"); | |
| return false; | |
| } | |
| var data=$(this).serialize(); | |
| $(this).find('input, select, textarea').not('[type="submit"]').attr("disabled", true); | |
| $(this).append(' <input type="hidden" name="num_form_elements" value="'+num_form_elements+'">'); | |
| $(this).append(' <input type="hidden" name="num_elements_already_disabled" value="'+num_elements_already_disabled+'">'); | |
| $(this).append(' <textarea style="display:true" name="serialized_data">'+(data)+'</textarea>'); | |
| // maybe in the textarea I have to .replace(/</g,'<') ? | |
| }); | |
| </script> | |
| </body></html><? |
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The function my_parse_str() is taken from https://gist.github.com/rubo77/6821632 (which was invented by Shagshag / https://gist.github.com/Shagshag/5849065 )