php - JSON Datatable error -

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to start, let me specify have no clue how json works. , in no way strong coder. when change != == says $swhere .= "status == '".aps_done."'"; json parse error says:

"datatables warning: json data server not parsed. caused json formatting error."

any clue means.

<?php include('aps2.database.php'); include('aps2.login.php');  *********** completed request processing code    $stable = 'aps2_requests';  $acolumns = array( 'rid', 'description', 'creatoruid', 'photoguid'); $sindexcolumn = 'description';  $slimit = ""; if ( isset( $_get['idisplaystart'] ) && $_get['idisplaylength'] != '-1' ) {     $slimit = "limit ".mysql_real_escape_string( $_get['idisplaystart'] ).", ".         mysql_real_escape_string( $_get['idisplaylength'] ); }  if ( isset( $_get['isortcol_0'] ) ) {     $sorder = "order  ";     ( $i=0 ; $i<intval( $_get['isortingcols'] ) ; $i++ )     {         if ( $_get[ 'bsortable_'.intval($_get['isortcol_'.$i]) ] == "true" )         {             $sorder .= $acolumns[ intval( $_get['isortcol_'.$i] ) ]."                 ".mysql_real_escape_string( $_get['ssortdir_'.$i] ) .", ";         }     }      $sorder = substr_replace( $sorder, "", -2 );     if ( $sorder == "order by" )     {         $sorder = "";     } }  $swhere = ""; if ( $_get['ssearch'] != "" ) {     $swhere = "where (";     ( $i=0 ; $i<count($acolumns) ; $i++ )     {         $swhere .= $acolumns[$i]." '%".mysql_real_escape_string( $_get['ssearch'] )."%' or ";     }     $swhere = substr_replace( $swhere, "", -3 );     $swhere .= ')'; }  /* individual column filtering */ ( $i=0 ; $i<count($acolumns) ; $i++ ) {     if ( $_get['bsearchable_'.$i] == "true" && $_get['ssearch_'.$i] != '' )     {         if ( $swhere == "" )         {             $swhere = "where ";         }         else         {             $swhere .= " , ";         }         $swhere .= $acolumns[$i]." '%".mysql_real_escape_string($_get['ssearch_'.$i])."%' ";     } }  if(strlen($swhere) > 1)  {     $swhere .= " , "; } else {     $swhere = "where "; }  $swhere .= "status == '".aps_done."'";  /*  * sql queries  * data display  */ $squery = "     select sql_calc_found_rows ".str_replace(" , ", " ", implode(", ", $acolumns))."       $stable     $swhere     $sorder     $slimit "; $rresult = mysql_query( $squery ) or die(mysql_error());  /* data set length after filtering */ $squery = "     select found_rows() "; $rresultfiltertotal = mysql_query( $squery ) or die(mysql_error()); $aresultfiltertotal = mysql_fetch_array($rresultfiltertotal); $ifilteredtotal = $aresultfiltertotal[0]; /* total data set length */ $squery = "     select count(".$sindexcolumn.")       $stable ";  $rresulttotal = mysql_query( $squery ) or die(mysql_error()); $aresulttotal = mysql_fetch_array($rresulttotal); $itotal = $aresulttotal[0];  /*  * output  */ $output = array(     "secho" => intval($_get['secho']),     "itotalrecords" => $itotal,     "itotaldisplayrecords" => $ifilteredtotal,     "aadata" => array() );  while ( $arow = mysql_fetch_array( $rresult ) ) {     $row = array();     ( $i=0 ; $i<count($acolumns) ; $i++ )     {         if ( $acolumns[$i] == "version" )         {             $row[] = ($arow[ $acolumns[$i] ]=="0") ? '-' : $arow[ $acolumns[$i] ];         }         else if ( $acolumns[$i] != ' ' )         {             if ($acolumns[$i] == 'creatoruid')             {                 $row[] = '<p style="margin: 5px;">' . aps2_user_name_from_uid($arow[$acolumns[$i]]) . '</p>';             }              else if ($acolumns[$i] == 'photoguid')             {                 $row[] = '<p style="margin: 5px;">' . aps2_get_request_photographer_or_status($arow['rid']) . '</p>';             }             else if ($acolumns[$i] == 'description')             {                 $row[] = '<p style="margin: 5px 10px;line-height: 1.2em;">' . stripslashes(preview_text_truncate($arow[ $acolumns[$i] ])) . '</p>';             }              else             {                 $row[] = $arow[ $acolumns[$i] ];             }         }     }      $status = aps2_get_request_status($arow['rid']);       $actionbuttons = '<a class="actionbutton greenlink viewbutton" href="' . $arow['rid'] . '">view</a>';     $actionbuttons .= '<a class="actionbutton greenlink uploadbutton" href="' . $arow['rid'] . '">upload</a>';       if (($status == aps_unassigned || $status == aps_in_progress) && aps2_get_user_role($_session['uid']) > aps_standard)     {         $actionbuttons .= '<a class="actionbutton greenlink acceptbutton" href="' . $arow['rid'] . '">accept</a>';     }      if (($arow['creatoruid'] == $_session['uid'] && aps2_get_request_status($arow['rid']) == aps_unassigned) || $_session['uid'] == 1)     {         $actionbuttons .= '<a class="actionbutton greenlink deletebutton" href="' . $arow['rid'] . '">delete</a>';     }      $row[] = '<div style="margin:3px 3px 6px 3px;text-align:center;">'.$actionbuttons.'</div>';     $output['aadata'][] = $row; }  echo json_encode( $output ); ?>

this code generates sql code , executes it.

when have $swhere .= "status != '".aps_done."'"; looks table rows status not equal aps_done.

there no == operator in mysql (see list yourself), when replace != == invalid sql code.

i'm guessing outputs mysql error message not valid json.

use = instead of ==.


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