// in_array function
<?php 
$namesArray = array("Joe", "Jane", "Bob", "Mary", "Paul", "Eddie", "John");
$lookingFor = "Albert"; 

if (in_array($lookingFor, $namesArray)) {
echo "You've found it!";
} else {
echo "Not found in this array!";
}
?>

// count function
<?php
$namesArray = array("Joe", "Jane", "Bob", "Mary", "Paul", "Eddie", "John");
$count = count($namesArray); 
?> 

// add to an existing array
<?php
/* create the original array */
$fruitArray = array("apple", "orange", "banana", "kiwi", "pear"); 

/* add to the original array */
array_push($fruitArray, "grape", "pineapple", "tomato"); 

/* list each element, with its key */
while (list($key,$value) = each($fruitArray)) {
echo "$key : $value";
} 

?>


// shift some data in the array
<?php
/* create the original array */
$fruitArray = array("apple", "orange", "banana", "kiwi", "pear"); 

/* add to the original array */
array_unshift($fruitArray, "grape", "pineapple", "tomato"); 

/* list each element, with its key */
while (list($key,$value) = each($fruitArray)) {
echo "$key : $value";
} 

?>

// delete from an array
<?php
/* create an array */
$fruitArray = array("apple", "orange", "banana", "kiwi", "pear"); 

/* shift something from the beginning */
$shifted = array_shift($fruitArray); 

/* list the contents of the new array, as well as the value you shifted off */
while (list($key,$value) = each($fruitArray)) {
echo "$key : $value";
} 

echo "and finally, in $shifted: $shifted"; 

?>

// sort an array
<?php
/* create the original array */
$fruitArray = array("apple", "orange", "banana", "kiwi", "pear");


/* sort the array */
sort($fruitArray); 

/* reset it so you can display it properly from beginning to end */ 

/* list each element, with its key */
while (list($key,$value) = each($fruitArray)) {
echo "$key : $value";
} 

?>