PHP pos() Function

In this chapter you will learn:

Definition for PHP pos() Function
Syntax for PHP pos() Function
Parameter for PHP pos() Function
Note for PHP pos() Function
Related methods for PHP pos() Function
Example - Output the value of the current element in an array
Example - A demonstration of all related methods

Definition

The pos() function returns the value of the current element in an array.

Syntax

PHP pos() Function has the following syntax.

pos(array)

Parameter

Parameter	Is Required	Description
array	Required.	Specifies the array to use

Note

This function is an alias of the current() function. This function does not move the arrays internal pointer.

Related methods

Method	Description
current()	returns the value of the current element in an array
end()	moves the pointer to, and outputs, the last element in the array
next()	moves the pointer to, and outputs, the next element in the array
prev()	moves the pointer to, and outputs, the previous element in the array
reset()	moves the pointer to the first element of the array
each()	returns the current element key and value, and moves the pointer forward

Example 1

Output the value of the current element in an array:


<?php//j  av a 2  s . c o  m
$people = array("A", "B", "C", "D");

echo pos($people) . "\n";
?>

The code above generates the following result.

Example 2

A demonstration of all related methods:


<?php/*from j av a  2s.  co  m*/
$people = array("A", "B", "C", "D");

echo current($people) . "\n"; // The current element is A
echo next($people) . "\n"; // The next element of A is B
echo current($people) . "\n"; // Now the current element is B
echo prev($people) . "\n"; // The previous element of B is A
echo end($people) . "\n"; // The last element is D
echo prev($people) . "\n"; // The previous element of D is C
echo current($people) . "\n"; // Now the current element is C
echo reset($people) . "\n"; // Moves the internal pointer to the first element of the array, which is A
echo next($people) . "\n"; // The next element of A is B

print_r (each($people)); // Returns the key and value of the current element (now B), and moves the internal pointer forward
?>