Arrays::intExplode() 

\nn\t3::Arrays()->intExplode($delimiter = ','); 

Split a string â or array â at the separator, remove non-numeric and remove empty elements

\nn\t3::Arrays('1,a,b,2,3')->intExplode(); // [1,2,3]
\nn\t3::Arrays(['1','a','2','3'])->intExplode(); // [1,2,3]
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| @return array

Source Code 

public function intExplode( $delimiter = ',' ) {
	$finals = [];
	if ($arr = $this->trimExplode($delimiter)) {
		foreach ($arr as $k=>$v) {
			if (is_numeric($v)) $finals[] = $v;
		}
	}
	return $finals;
}
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