<?php

$trame = ",ADCO 020122037669 =,,OPTARIF HC.. <,,ISOUSC 45 ?,,HCHC 140779009 +,,HCHP 097287521 <,,PTEC HP..  ,,IINST 011 Y,,IMAX 045 H,,PAPP 02470 .,,HHPHC C .,,TIMESTAMP 1575210073";


function explode_edfTrame($trame) {
	$edf_proprietes = array();

	foreach(explode(",", $trame) as $propriete) {
		// on ignore les lignes vides
		if (strlen($propriete)>0) {
			$prop = explode(" ", $propriete);
			if (count($prop) > 1) {
				$edf_proprietes[] = array($prop[0], $prop[1]);
			}
		}
	}

	return $edf_proprietes;
}

print_r(explode_edfTrame($trame));