php - HTTP Error 500 (Internal Server Error) in Drupal -


iam providing datas using json ios app using php. while running code in browser, showing server error. if there no values in database, shows {"posts":null} provided in code. problem occurs if there value in database. shows error

server error website encountered error while retrieving http://path server file/php/categoryitemlisting.php?category=11. may down maintenance or configured incorrectly. here suggestions: reload webpage later. http error 500 (internal server error): unexpected condition encountered while server attempting fulfill request. error occuring php file. using other files, able transfer data.

my connection.php file :

<?php $link = mysql_connect("127.0.0.1","root","") or die('cannot connect db'); mysql_set_charset("utf8"); mysql_select_db('cotton',$link) or die('cannot select db'); ?>

categoryitemlisting.php

 <?php     require('connection.php');    $item = array()       ;     /* connect db */       if(isset($_request['category']))       {             $k=$_request['category'];         /* grab posts db */              // $k=11;             $catid = mysql_query("select entity_id  field_data_field_cat field_cat_tid= $k");             while($r = mysql_fetch_assoc($catid))            {                 $category[] = $r['entity_id'];                   foreach ( $category $cat );               {                   $data= mysql_query("select field_data_field_name.entity_id, field_data_field_name.field_name_value, file_managed.uri, field_data_field_sec.field_sec_tid file_managed inner join ( field_data_field_thumb, field_data_field_name, field_data_field_sec ) on ( file_managed.fid = field_data_field_thumb.field_thumb_fid , field_data_field_name.entity_id = field_data_field_thumb.entity_id , field_data_field_thumb.entity_id = field_data_field_sec.entity_id ) field_data_field_name.entity_id = $cat");                   $items = mysql_fetch_assoc($data);                $item[]= $items;               }             }                 $re="public:\/\/";                 $list = json_encode(array('posts'=>$item));             $list = str_replace( $re, "http://localhost/sites/default/files/" ,$list);                 echo $list;               @mysql_close($link);        }        else       {       echo "connection failed";       } ?>

how can values fixing error? dont think problem of server. if there other mistakes in code ?

look yout php.ini , set:

display_errors = on
error_reporting = e_all

if display_error off , have type of problem code (e.g.: parse error) response 500 status page.


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