it's shit like this, PHP
This post has two snippets of code that demonstrate some aspects of the braindeadness that appears to be inherent in PHP arrays. I suggest trying to predict the output (especially with exhibit A) before you run the scripts, for extra fun ;)
Exhibit A:
This behaviour does not clearly follow from the docs.
This behaviour is described in examples in the docs. It demonstrates how braindead the PHP array type is.
<?php // create empty array $a $a = array(); // append two items to it $a[] = "a"; $a[] = "b"; // remove last item using array_pop array_pop($a); // append another item $a[] = "c"; $b = array(); $b[] = "a"; $b[] = "b"; // remove last item using unset unset($b[1]); $b[] = "c"; // print key for value "c" print array_search("c", $a). "\n"; print array_search("c", $b). "\n"; ?>
Exhibit B:
<?php // create pre-filled key-less array $a $a=array('a','b'); // dump it print_r($a); // json-dump it print json_encode($a)."\n"; // add key/value item to array $a['x']='c'; print_r($a); print json_encode($a)."\n"; ?>
(I’m on PHP 5.3.4).
For those of us not intimately in love with php, wtf do those snippets do?
Comment by Sybren — Aug 20, 2011 8:46:50 AM | # - re
I have added some code comments, and an introduction. Is this helpful?
Comment by peter — Aug 20, 2011 9:56:04 AM | # - re
Exhibit A, The only thing not in the docs is that array_pop re-indexes an array.
Comment by phx — Jan 19, 2012 11:37:01 AM | # - re