php - How can I run a function with an array of checkbox values passed as an argument? -


so i'm wanting run function every time user clicks btnchangecat button...im having trouble , i'm not sure how work!

im trying run showcategory($_post['chkcat'], 1)[0];and pass array of checked checkboxes when user clicks btnchangecat button. im not sure why isn't working??

i've literally searched everywhere working solution can't find 1 work when passing values function!

    $showvideos = showcategory($categories, 1)[0];     $rowlength = showcategory($categories, 1)[3];     $likes = showcategory($categories, 1)[1];     $dislikes = showcategory($categories, 1)[2]; ?> <main>      <div class='controller-wrap'>         <div class='content-wrap'>         <h3>category: </h3>hp              <form action='most-liked.php' method='post'>                 <?php                     $allcategories = ["all", "sport", "automotive", "comedy", "misc", "surfing"];                     $htmloutput = "";                     $i=0;                         for($i;$i<sizeof($allcategories);$i++)                         {                             if($allcategories[$i] == "surfing"){                                 $htmloutput .= "<input selected='selected' type='checkbox' name='chkcat[]' value='".$allcategories[$i]."'/>";                             }                             else{                                 $htmloutput .= "<input type='checkbox' name='chkcat[]' value='".$allcategories[$i]."'/>";                             }                         }                        echo $htmloutput;                 ?>              </form>             <br />         if(isset($_post['chkcat'])){             if(is_array($_post['chkcat'])) {                 foreach($_post['chkcat'] $value){                   echo $value;                 }             }else{                     $value = $_post['chkcat'];                     echo $value;                 }                 // showcategory($_post['chkcat'], 1)[0];         }         isset($_post['btnchangecat'])){             // //how can run function array of checkboxes??             showcategory($_post['chkcat'], 1)[0];         }         ?>         <input type='submit' value='change categories' class='btnlike btnlike' name='btnchangecat'/>     </div> </main>


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