Shulou(Shulou.com)05/31 Report--

This article mainly explains the "php to achieve array de-duplication function is which", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in-depth, together to study and learn "which function to achieve array de-duplication in php" bar!

1. Array_unique () first sorts the values as strings, then retains only the first encountered key name for each value, and then ignores all subsequent key names.

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