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my @matching elements=grep /$wahtever/, @array;
print $_, "\n" for @matching elements;
# But then just:
# print $_, "\n" for grep /$wahtever/, @array;
# if you don't need @matching elements elsewhere

foreach (@array) {
    print "Matched :$_:\n" if /$value/;
}

/$value/ and print "Matched :$_:\n" for @array;