PHP Tutorial Traversing two-dimensional array and multi-dimensional array code On the PHP array, let's talk about two-dimensional array and multi-dimensional traversal code, the following three examples to test the array traversal PHP code function. * /
function arr_foreach ($ arr) { if (! is_array ($ arr)) { return false; } foreach ($ arr as $ key => $ val) { if (is_array ($ val)) { arr_foreach ($ val); } else { echo $ val. ''; } } }
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