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php has some similarities with some array applications in other languages. This article mainly shares with you the detailed explanation of PHP array definition and array traversal, hoping to help everyone.
1. Array definition: ① Directly define $[0]='v' ② Use array to define contact=array['a','b']
2. Array type: ① Associative array ② Index array
3. Array traversal:
1. One-bit array traversal:
① Use For loop to traverse
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