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@ 2015-03-19T20:07:49Z

<?php

class X {
    public $_cache_tags = ['default', 'stuff'];
    
    public function shit() {
        $this->_cache_tags[] = 'this works';
        array_push($this->_cache_tags, 'this too');
    }
    
}

$x = new X();
$x->shit();
var_dump($x->_cache_tags);

Output
Performance
VLD
References
Branches

array_push: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive preview

43.98 ms | 402 KiB | 5 Q