I'm working on a page which is supposed to add, delete and search for elements in an array. However I'm not sure how to use the conditional statements around the arrays. Here's what I have so far:

PHP Code:

foreach($_POST as $key => $value) {
$$key = $value;
}
if(isset($cmd_add)) { // Checks if the "Add Element" button is pressed
// Array creation code goes here ::HELP::
// array_push() goes here?
}
elseif(isset($cmd_delete)) {
// Search for array element ::HELP:: array_search() ?
// unset($array[$i]); ?????
elseif(isset($cmd_search)) {
// Array search code goes here ::HELP::
// Result message goes here 


Then, to display the current elements on the page, would I do this?

PHP Code:

for($x = 0; $x < 5; $x++) {
echo $array[$x];
} 


Also, would i need to use sessions in the case that a user wishes to add/delete more than one element?

my uploaded copy is at: http://203.206.125.189/ipt/arrays.php

To display the elements you need to change it slightly.

PHP Code:

for($x = 0; $x < count($array); $x++) {
echo $array[$x];
} 


That'll display all elements, regardless of size.

If you want to add and delete elements to the array,youll have to store the array in a session to stop it being lost everytime the page is loaded.

So after the original code you posted which checks what should be carried out (add,delete,search) save the array into a session

PHP Code:

$_SESSION['myarray'] = $array; 


Then at the start of the page

PHP Code:

if(isset($_SESSION['myarray']))
$array = $_SESSION['myarray'];
else
$array = array(); // first time user has loaded page 


would this be the best way of checking if array elements exist?

PHP Code:

if(isset($cmd_add)) {
$array = array_push($array,$txt_add);
}
if(isset($cmd_delete)) {
// I'M STUCK HERE AS I'M UNSURE OF THE SYNTAX!!!!
}
if(isset($cmd_search)) {
if(in_array($txt_search,$array)) {
$result = "This number is present in the array."
} else {
$result = "This number is not present in the array."
}
} 


Have a look at array_search.