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<?php $la_prueba=array('codest'=>'001','codnomdes'=>'0001','codest2'=>'001','codnomdes2'=>'0001','codest3'=>'001','codnomdes3'=>'0001','codest4'=>'001','codnomdes4'=>'0001','codest5'=>'001','codnomdes6'=>'0001','codest7'=>'001','codnomdes7'=>'0001','codest8'=>'001','codnomdes8'=>'0001','codnominas'=>'0001-0004-0005'); var_dump(array_key_exists("codnominas",$la_prueba)); ?>
Output for git.master, git.master_jit, rfc.property-hooks
bool(true)

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