[TYPO3-core] RFC: PHP warning in class.t3lib_tceforms.php

[Dmitry Dulepov]

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Hello!

This is a CVS patch request.

Branches: HEAD, TYPO3_4-0

Symptoms: PHP warning may be displayed while editing page record if
record was created by the very old versions of templavoila.

Problem: TCEForms always assume that <meta>-tag in the flexform is array
and do not check if it is really array. The following simple example
causes PHP warning: "<meta> </meta>". Tags were created this way by old
versions of templavoila. This also can happen if flexform created manually.

Solution: check if "meta" is array and if not, set it to empty array
(this is acceptable for the code).

See: http://bugs.typo3.org/view.php?id=3196

FAQ:
Q: Why this needs to be fixed in the code? Looks like templavoila problem.
A: It needs to be fixed in the core because "meta" handling there is
incorrect. Old templavoila just helped to uncover this problem.
Q: How important is this.
A: Not critical at all, but nice to have. Generally cleaning flexforms
resolves this problem (unless you have thousand such flexforms in database).
Q: Does new TV has the same problem
A: I could not reproduce it with new TV versions.

Note: commit is pending until merge is complete.

Dmitry.
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