Question 42242 in PHP Question posted in
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Field missing for stdClass php

$resp = new stdClass();
$resp->first_name->type = "select";
$resp->first_name->required = 'true';
$resp->first_name->type_meta->options[0] = "opt 1";
$resp->first_name->type_meta->options[1] = "opt 2";
$resp->first_name->type_meta->options[2] = "opt 3";
$resp->last_name->type = "text";
$resp->last_name->required = 'true';
$resp->last_name->type_meta=new stdClass();

Why does my script won’t work on my php file but works on w3schools php try it compiler. The error I get is
Fatal error: Uncaught Error: Attempt to assign property "type" on null

Even though I am using stdClass() to create an object so why it gives null for type field.

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2

Answers


  1. 0

    You need to create the sub-properties first. A property without a value is null, so you need to make it an stdClass as well and then you can go.

    $resp = new stdClass();
$resp->first_name = new stdClass();
$resp->first_name->type = "select";
$resp->first_name->required = 'true';
$resp->first_name->type_meta = new stdClass();
$resp->first_name->type_meta->options[0] = "opt 1";
$resp->first_name->type_meta->options[1] = "opt 2";
$resp->first_name->type_meta->options[2] = "opt 3";
$resp->last_name = new stdClass();
$resp->last_name->type = "text";
$resp->last_name->required = 'true';
$resp->last_name->type_meta=new stdClass();
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  2. 0

    you need to set a value for $resp->first_name and $resp->last_name because there values is null or if you are using php 8 you can use null safer operator like this : $resp->first_name?->type = "select";

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