Edit report at https://bugs.php.net/bug.php?id=61255&edit=1
ID: 61255 Updated by: cataphr...@php.net Reported by: mi+php at aldan dot algebra dot com Summary: Unserialize should handle incorrect or missing string-length -Status: Open +Status: Wont fix Type: Feature/Change Request Package: *Data Exchange functions Operating System: All PHP Version: 5.3.10 Block user comment: N Private report: N New Comment: As mentioned, " is not escaped, making the length required. This is not even considering whether it would be a good idea to otherwise make unserialize lax. You are of course free to write your own serialization/unserialization library, like igbinary. Previous Comments: ------------------------------------------------------------------------ [2012-03-03 04:18:37] mi+php at aldan dot algebra dot com If the length is what's driving the parsing, then why are the strings S2 and S3 empty in my test? Shouldn't S2 be '123456' and S3 be '1234567"'? ------------------------------------------------------------------------ [2012-03-03 00:45:48] anon at anon dot anon It depends on the lengths because the strings aren't escaped. serialize('"') = s:1:"""; ------------------------------------------------------------------------ [2012-03-02 22:26:46] mi+php at aldan dot algebra dot com Description: ------------ A serializing string "foo" produces an intuitive result 's:3:"foo"' and unserialize() properly decodes that back. It would be useful, however, if the unserialize function could handle (even if less efficiently) cases, where the string-length is missing or even specified incorrectly. Currently any such mismatches result in empty output from the function, even though `s:"foo"' or `s::"foo"' or even `s:4:"foo"' is no harder to understand. The feature would be of help to those of us, who need to a massive search/replace in the dump of serialized objects. Test script: --------------- <? $s1 = "s:7:\"1234567\""; $s2 = "s:6:\"1234567\""; $s3 = "s:8:\"1234567\""; $s4 = "s::\"1234567\""; print "S1: >" . unserialize($s1) . "<\n"; print "S2: >" . unserialize($s2) . "<\n"; print "S3: >" . unserialize($s3) . "<\n"; print "S4: >" . unserialize($s4) . "<\n"; ?> Expected result: ---------------- S1: >1234567< S2: >1234567< S3: >1234567< S4: >1234567< Actual result: -------------- S1: >1234567< S2: >< S3: >< S4: >< ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=61255&edit=1