<?php $meuArrayMultidimensional = array(array("campo" => "teste"), array("campo" => "valor qualquer"), array("campo" => "teste")); $search = "teste"; $retorno = array_keys( array_filter( $meuArrayMultidimensional, function ($value) use ($search) { return (stripos($value['campo'], $search) !== false); } ) ); print_r($retorno);
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