Re: changing signature at once for all users

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Cristian-Petru Pencov wrote:
> I'm again in situation to replace some text in user's signature for mor=
e=20
> than fifty accounts.

with the usual "SQL database" backend for preference storage, it is=20
possible to write code that retrieves the individual users' "identities" =

preferences (they are serialized PHP objects and can be unserialize()d). =

Note that one user can have several identities, so for each user, you=20
are looking at an array of arrays.  Then, there is both a "signature"=20
and a "signature_html" preference.  While parsing and manipulating the=20
normal signature with preg_replace or such shouldn't be too hard to do,=20
things get a bit more complicated when you're dealing with HTML code.=20
Depending on what you would like to change in every user's signature=20
(e.g. phone number or postal address), you might have a hard time=20
parsing the HTML code since users may have selected to use a different=20
font (small, bold, whatever) for parts of the signature, and they might=20
even have done so accidentally.  For instance, imagine you're trying to=20
put a new phone number into everyone's signatures, but some user has got =

opening or closing HTML tags inside the phone number because they missed =

to select one digit of the phone number when they edited their signature =

and put all other digits of the phone number into boldface.  That really =

is one mess to sort out if all you wanted to do is write one small=20
script to adapt you users' signatures.  Oh, and you'll have to=20
serialize() that stuff and write it back to the database once you've=20
walked through each user's array of identities.  Better have a backup of =

the old data, too, in case something goes wrong.


Jens


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