line 24:
$WADbSearch1->keywordComparison($KeyArr1,"".$_POST['Search'] ."" "OR","Includes","%20AND%20","%20OR%20","%22","%22",0);
is missing a comma, it should be:
$WADbSearch1->keywordComparison($KeyArr1,"".$_POST['Search'] ."", "OR","Includes","%20AND%20","%20OR%20","%22","%22",0);