<?php
$string = "SBNID=304,MENAME=RV0714,MEID=122,CELLID=4,CELLNAME=LRV0714D
MBTS_ACN1_RJ/ETHPORT:Cabinet No.=0, Subrack No.=0, Slot No.=7, Port No.=0, Subboard Type=BASE_BOARD";
$regex = '~(?P<key>\b[A-Za-z\h.]+)=(?P<value>\w+)~';
foreach ($matches as $match) {
}
?>
PD9waHAKCiRzdHJpbmcgPSAiU0JOSUQ9MzA0LE1FTkFNRT1SVjA3MTQsTUVJRD0xMjIsQ0VMTElEPTQsQ0VMTE5BTUU9TFJWMDcxNEQKTUJUU19BQ04xX1JKL0VUSFBPUlQ6Q2FiaW5ldCBOby49MCwgU3VicmFjayBOby49MCwgU2xvdCBOby49NywgUG9ydCBOby49MCwgU3ViYm9hcmQgVHlwZT1CQVNFX0JPQVJEIjsKCiRyZWdleCA9ICd+KD9QPGtleT5cYltBLVphLXpcaC5dKyk9KD9QPHZhbHVlPlx3Kyl+JzsKCnByZWdfbWF0Y2hfYWxsKCRyZWdleCwgJHN0cmluZywgJG1hdGNoZXMsIFBSRUdfU0VUX09SREVSKTsKCmZvcmVhY2ggKCRtYXRjaGVzIGFzICRtYXRjaCkgewoJcHJpbnRfcigkbWF0Y2gpOwp9Cgo/Pg==