Description:
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From manual page: http://www.php.net/function.implode
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It seems that in certain cases, implode returns NULL.  This seems in violation of the specification.

One of the commenters mentions that it will do so if passed a string as well.  Should this not be rectified, at least for future versions?  If not, should the documentation be updated to reflect the circumstances where NULL is returned instead of an empty string?


Test script:
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// Prints "TRUE";
print "Is null: " . (NULL === implode(" - ", [])) ? "TRUE" : "FALSE";