array_column broken in PHP 7.0.32, breaks services/Plugins.php

[khalwat]

Description

As part of services/Plugins.php, it does the following:

        // Sort plugins by their names
        $names = array_column($this->_plugins, 'name');
        array_multisort($names, SORT_NATURAL | SORT_FLAG_CASE, $this->_plugins);

https://github.com/craftcms/cms/blob/develop/src/services/Plugins.php#L236

array_column() is apparently broken on PHP 7.0.32, and possibly earlier, since the change list for PHP 7.0.32 is pretty sparse: http://php.net/ChangeLog-7.php

It just returns an empty array here, which then causes array_multisort() to throw an exception, since the arrays of of a different length.

@engram-design wrote this alternate code, which causes it to work fine:

// Sort plugins by their names
$names = [];
foreach ($this->_plugins as $plugin) {
   $names[] = $plugin->name;
}

Steps to reproduce

@engram-design narrowed it down to a simple test case:

$class = new \stdClass();
$class->name = 'Test';
var_dump($class);

$names = array_column([$class], 'name');
var_dump($names);

// Produces:
object(stdClass)#769 (1) { ["name"]=> string(4) "Test" }
array(0) { }

Additional info

• Craft version: 3.0.30.1
• PHP version: 7.0.32

Submitted PHP bug: https://bugs.php.net/bug.php?id=77119

[engram-design]

See also https://bugs.php.net/bug.php?id=77119

[marionnewlevant]

Exactly the same thing was happening to me, but it has also mysteriously stopped. I think something was done to the php install, but I'm not sure what. It is still reporting 7.0.32

[brandonkelly]

We just released 3.0.30.2 with a fix for this.

[djAjax]

The same issue in PHP 7.0.33

[brandonkelly]

@djAjax where? the particular array_column() call this issue is about has been updated. Can you post a new issue, and include a stack trace pulled from your log files in storage/logs/?