The Perils of Foreach, or “I’ve got yer references dangling right here!”
Here’s another one of those pitfalls in PHP that might be classified as a neophyte mistake, but nevertheless it bit me in the ass a while ago. I was perplexed at first why this one test I had written kept failing, and finally it boiled down to the way I was iterating through an array multiple times in the same block of code. As it turned out, I had made the mistake of leaving a reference to a variable hanging around after I was done with it. Later, in …
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