Description:
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The alt text for the php logo is not changed on april's fool's day, to adapt to the different picture.
In v5 the picture is of another dog, so the alt text won't be the same as for v4.

Reproduce code:
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<?php phpinfo(); ?>

Expected result:
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In v4 the picture has a different alt text (namely "Nadia!"). 

Actual result:
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The alttext doesn't change.