PHP Form Fields with Int as name for json array - php

Question

I have the following code which works well to get specific values and strip the strings like I need. However, I want to grab the fields with an int for the name and place those into an json array under my custom fields section. How can I iterate over the fields and find all fields with an int for the name then use that as the json ID with the passed value as the json value? IE:
input type="text" name="24349163" value="Here"
JSON encoded:
"id"=>'24349163', "value" =>'value of the field I need'
What I have now:
foreach($_POST as $key => $value){
if(preg_match('/^z_/i',$key)){
$arr[strip_tags($key)] = strip_tags($value);
}
}
$create = json_encode(array('ticket' => array('subject' => $arr['z_subject'],
'comment' => array( "body"=> $arr['z_description']), 'requester' =>
array('name' => $arr['z_name'], 'email' => $arr['z_requester']),
'custom_fields' => array("id"=>'24349163', "value" =>'Here'))));
Form for post:
<form id="zFormer" method="post" action="tickets.php" name="zFormer">
<table>
<tr>
<td valign="top">
<label for="z_name">Your Name:</label>
<input type="text" value="John Doe" name="z_name" />
</td>
<td valign="top">
<label for="z_requester">Your Email Address: </label>
<input type="text" value="john#domain.com" name="z_requester" />
</td>
</tr>
<tr>
<td valign="top">
<label for="z_subject">Title/Subject: </label>
<input type="text" value="Who needs a subject?" name="z_subject" />
</td>
<td valign="top">
<label for="z_description">Summary Description:</label>
<textarea name="z_description">Systems are down</textarea>
</td>
</tr>
<tr>
<td valign="top">
<label for="24275273">Incident Start Date:</label><br/>
<input type="date" name="24275273" value="" />
</td>
<td valign="top">
<label for="24275293">Incident Start Time:</label><br/>
<input type="time" name="24275293" value="" />
</td>
</tr>

Answer 1

I am not 100% sure I understand the question, but it sounds like you need to add an else in your foreach:
foreach($_POST as $key => $value){
if(preg_match('/^z_/i',$key)){
$arr[strip_tags($key)] = strip_tags($value);
}
elseif(is_numeric($key)) {
$arr['ticket']['custom_fields'] = array('id'=>$key,'value'=>$value);
/*
if you expect multiple id values:
$arr['ticket']['custom_fields'][] = array('id'=>$key,'value'=>$value);
*/
}
}

Answer 2

Your code is processing only $POST keys that start with z. To fix, use this.
foreach($_POST as $key => $value){
if(preg_match('/^z_/i',$key) || gettype($key) == 'integer'){
$arr[strip_tags($key)] = strip_tags($value);
}
}
I have added || gettype($key) == 'integer' to your if clause to process integer keys as well.