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<?php var_dump(decbin(ord(gzcompress("foo"))), "foo"); var_dump(decbin(ord(gzcompress("fdoo"))), "foo"); var_dump(decbin(ord(gzcompress("fsoo"))), "foo");
Output for 4.3.0 - 7.2.0
string(7) "1111000" string(3) "foo" string(7) "1111000" string(3) "foo" string(7) "1111000" string(3) "foo"