Definition and usage of php array function current()

php current() definition?

The current() function in php returns the current element (unit) in the array. If the current element is empty or the current element has no value, it returns FALSE. Each array has an internal pointer pointing to its "current" element, which initially points to the first element inserted into the array. This function does not move the internal pointer of the array. If you need to move the pointer, you need to cooperate with other functions. Let’s take a look.

Related methods:

• #end() - Point the internal pointer to the last element in the array and output

• next() - Point the internal pointer to the next element in the array, and output

• prev() - Point the internal pointer to the previous element in the array , and output

• reset() - Point the internal pointer to the first element in the array, and output

• each() - Return The key name and key value of the current element, and moves the internal pointer forward

Let’s take a look at its syntax

current(array)

The parameter array is the array that needs to be used

PS: The current() function returns the value of the array element currently pointed to by the internal pointer, and does not move the pointer. If the internal pointer points beyond the end of the cell list, current() returns FALSE.

Example

The following example demonstrates all related methods, the code is as follows

<?php
$people = array("Bill", "Steve", "Mark", "David");
echo current($people) . "<br>"; // 当前元素是 Bill
echo next($people) . "<br>"; // Bill 的下一个元素是 Steve
echo current($people) . "<br>"; // 现在当前元素是 Steve
echo prev($people) . "<br>"; // Steve 的上一个元素是 Bill
echo end($people) . "<br>"; // 最后一个元素是 David
echo prev($people) . "<br>"; // David 之前的元素是 Mark
echo current($people) . "<br>"; // 目前的当前元素是 Mark
echo reset($people) . "<br>"; // 把内部指针移动到数组的首个元素，即 Bill
echo next($people) . "<br>"; // Bill 的下一个元素是 Steve
print_r (each($people)); // 返回当前元素的键名和键值（目前是 Steve），并向前移动内部指针
?>

The code running results are as follows:

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