PHP multiple array traversal methods

php has multiple methods of array traversal. This article mainly introduces the use of key, value, current, next and prev functions to traverse arrays in PHP, and provides a more detailed analysis of common techniques for array traversal in PHP. I hope to be helpful.

The example in this article describes the method of traversing an array using key, value, current, next and prev functions in PHP. Share it with everyone for your reference. The specific analysis is as follows:

There is a series of functions for array traversal in php that allow us to operate arrays very conveniently. To traverse an array, the first step is to point the pointer to the beginning of the array and use the reset() function.

Use the prev() and next() functions to view the previous and next elements of the array. You can use the current() function to get the current value at both the location and the location, and use the key() function to get the key value

$array = array('foo' => 'bar', 'baz', 'bat' => 2);
function displayArray(&$array) {
reset($array);
while (key($array) !== null) {
echo key($array) .": " .current($array) . PHP_EOL;
next($array);
}
}

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