无法使用 Page Builder 更新主题页面

Question

We are currently migrating our site from php 5.6 to 7.2 as our hosts have set a fixed end of life for this.

We are using BeTheme and we can see that most features are intact, however when updating posts the site breaks when the muffin builder existing layouts, this largely is due to a

Fatal error: Uncaught Error: [] operator not supported for strings in /XXXXX/wp-content/themes/XXXXX/functions/meta-functions.php

$mfn_items[$newParentSectionID]['items'][] = $item;

Any ideas to prevent this?

Answer 1

You get this error when attempting to use the short array push syntax on a string.

For example, this

$foo = 'foo';
$foo[] = 'bar'; // ERROR!

It seems there are some issues with PHP 7 and code using the empty-index array push syntax.

To make it clear, these work fine in PHP 7+

$previouslyUndeclaredVariableName[] = 'value'; // creates an array and adds one entry

$emptyArray = []; // creates an array
$emptyArray[] = 'value'; // pushes in an entry

you need to edit your code.

like this

$mfn_items = array();
$mfn_items[$newParentSectionID]['items'][] = $item;

more details you can read here