Traverse all the arrays

arr-ansel.php

<?php
/***
 *       ____  _____  _____ _____ _____ _   _          _
 *      / __ \|  __ \|_   _/ ____|_   _| \ | |   /\   | |
 *     | |  | | |__) | | || |  __  | | |  \| |  /  \  | |
 *     | |  | |  _  /  | || | |_ | | | | . ` | / /\ \ | |
 *     | |__| | | \ \ _| || |__| |_| |_| |\  |/ ____ \| |____
 *      \____/|_|__\_\_____\_____|_____|_| \_/_/    \_\______|
 *         /\   |  __ \|  __ \     /\\ \   / /
 *        /  \  | |__) | |__) |   /  \\ \_/ /
 *       / /\ \ |  _  /|  _  /   / /\ \\   /
 *      / ____ \| | \ \| | \ \  / ____ \| |
 *     /_/    \_\_|  \_\_|  \_\/_/    \_\_|
 *
 *
 */
/*
 * This is just to re-create the array you were showing us
 */
$original_array = array();

$bla           = new stdClass();
$bla->id       = 6;
$bla->name     = 'PURL';
$bla->form_key = 'negl6u';

$original_array[] = $bla;

$bla->id       = 9;
$bla->name     = 'PURL List';
$bla->form_key = '73yyhk';

$original_array[] = $bla;

echo '<pre>';
var_dump( $original_array );
echo '</pre>';


/***
 *      ______ ____  _____  ______          _____ _    _
 *     |  ____/ __ \|  __ \|  ____|   /\   / ____| |  | |
 *     | |__ | |  | | |__) | |__     /  \ | |    | |__| |
 *     |  __|| |  | |  _  /|  __|   / /\ \| |    |  __  |
 *     | |   | |__| | | \ \| |____ / ____ \ |____| |  | |
 *     |_|    \____/|_|  \_\______/_/    \_\_____|_|  |_|
 *
 *
 */
/*
 * Foreach iteration
 * Loop through the array with a foreach
 */
// Prepping an array that we're going to stick stuff into
$foreach_array = array();
foreach ( $original_array as $array_element ) {
	// At this point, you don't grab the values with $array_element['name']
	// Because it's an object, it'll be with $array_element->name
	$foreach_array[ $array_element->name ] = $array_element->name;
}
echo '<h1>Foreach traversal</h1>';
echo '<pre>';
var_dump( $foreach_array );
echo '</pre>';


/***
 *      ______ ____  _____    _____ _______ ______ _____         _______ _____ ____  _   _
 *     |  ____/ __ \|  __ \  |_   _|__   __|  ____|  __ \     /\|__   __|_   _/ __ \| \ | |
 *     | |__ | |  | | |__) |   | |    | |  | |__  | |__) |   /  \  | |    | || |  | |  \| |
 *     |  __|| |  | |  _  /    | |    | |  |  __| |  _  /   / /\ \ | |    | || |  | | . ` |
 *     | |   | |__| | | \ \   _| |_   | |  | |____| | \ \  / ____ \| |   _| || |__| | |\  |
 *     |_|    \____/|_|  \_\ |_____|  |_|  |______|_|  \_\/_/    \_\_|  |_____\____/|_| \_|
 *
 *
 */

/*
 * Iteration
 * Loop through the array with an iteration
 */
$iteration_array = array();
for ( $i = 0; $i < count( $original_array ); $i ++ ) {
	$iteration_array[ $original_array[ $i ]->name ] = $original_array[ $i ]->name;
}
echo '<h1>Iteration traversal</h1>';
echo '<pre>';
var_dump( $iteration_array );
echo '</pre>';


/*
 * Iteration
 * Same as above but a bit easier top read for the array positions
 */
$alternative_iteration_array = array();
for ( $i = 0; $i < count( $original_array ); $i ++ ) {
	$curr_item                                       = $original_array[ $i ];
	$alternative_iteration_array[ $curr_item->name ] = $curr_item->name;
}

echo '<h1>Alternative iteration traversal</h1>';
echo '<pre>';
var_dump( $alternative_iteration_array );
echo '</pre>';


// ----------------------------------


$original_array2 = array(
	array(
		'id'       => 6,
		'name'     => 'PURL',
		'form_key' => 'negl6u',
	),
	array(
		'id'       => 9,
		'name'     => 'PURL',
		'form_key' => 'negl6u',
	),
);

echo '<h1>What if it\'s and array of arrays, you ask?</h1>';
echo '<pre>';
var_dump( $original_array2 );
echo '</pre>';


/***
 *      ______ ____  _____  ______          _____ _    _
 *     |  ____/ __ \|  __ \|  ____|   /\   / ____| |  | |
 *     | |__ | |  | | |__) | |__     /  \ | |    | |__| |
 *     |  __|| |  | |  _  /|  __|   / /\ \| |    |  __  |
 *     | |   | |__| | | \ \| |____ / ____ \ |____| |  | |
 *     |_|    \____/|_|  \_\______/_/    \_\_____|_|  |_|
 *
 *
 */
/*
 * Foreach iteration
 * Loop through the array with a foreach
 */
// Prepping an array that we're going to stick stuff into
$foreach_array2 = array();
foreach ( $original_array2 as $array_element2 ) {

	$foreach_array2[ $array_element2['name'] ] = $array_element2['name'];
}
echo '<h1>Foreach traversal</h1>';
echo '<pre>';
var_dump( $foreach_array2 );
echo '</pre>';


/***
 *      ______ ____  _____    _____ _______ ______ _____         _______ _____ ____  _   _
 *     |  ____/ __ \|  __ \  |_   _|__   __|  ____|  __ \     /\|__   __|_   _/ __ \| \ | |
 *     | |__ | |  | | |__) |   | |    | |  | |__  | |__) |   /  \  | |    | || |  | |  \| |
 *     |  __|| |  | |  _  /    | |    | |  |  __| |  _  /   / /\ \ | |    | || |  | | . ` |
 *     | |   | |__| | | \ \   _| |_   | |  | |____| | \ \  / ____ \| |   _| || |__| | |\  |
 *     |_|    \____/|_|  \_\ |_____|  |_|  |______|_|  \_\/_/    \_\_|  |_____\____/|_| \_|
 *
 *
 */

/*
 * Iteration
 * Loop through the array with an iteration
 */
$iteration_array2 = array();
for ( $i = 0; $i < count( $original_array2 ); $i ++ ) {
	$iteration_array2[ $original_array2[ $i ]['name'] ] = $original_array2[ $i ]['name'];
}
echo '<h1>Iteration traversal</h1>';
echo '<pre>';
var_dump( $iteration_array2 );
echo '</pre>';


/*
 * Iteration
 * Same as above but a bit easier top read for the array positions
 */
$alternative_iteration_array2 = array();
for ( $i = 0; $i < count( $original_array2 ); $i ++ ) {
	$curr_item                                          = $original_array2[ $i ];
	$alternative_iteration_array2[ $curr_item['name'] ] = $curr_item['name'];
}

echo '<h1>Alternative iteration traversal</h1>';
echo '<pre>';
var_dump( $alternative_iteration_array2 );
echo '</pre>';


//-+----------------------------------------------


$original_array3 = array(
	'some_key'       => array(
		'id'       => 6,
		'name'     => 'PURL',
		'form_key' => 'negl6u',
	),
	'some_other_key' => array(
		'id'       => 9,
		'name'     => 'PURL',
		'form_key' => 'negl6u',
	),
);


echo '<h1>An array of key=>array() stuff</h1>';
echo '<pre>';
var_dump( $original_array3 );
echo '</pre>';

$keyval_array = array();
foreach ( $original_array3 as $key => $value ) {
	// At this point, we're one level deep.
	// We're looking at the value of the first level
	echo '<pre>';

	echo '<div>--------------------------</div>';
	echo '<div>The current $key is ' . $key . '</div>';
	echo '<div>The current $value is ' . $value . '</div>';
	echo '<div>--------------------------</div>';
	echo '</pre>';

	echo '<h2>Awwww, crap! an error</h2>';
	echo '<h3>Let\'s see what a var_dump of $value would do</h3>';
	var_dump( $value );

	echo '<h1>AHA!</h1>';

	/*
	 * We need to actually loop through $value, which is an array
	 * Basically, a loop within a loop
	 *
	 * Here, you can choose foreach ($value as $curr_array_entry)
	 * or
	 * for ( $i = 0; $i < count( $value ); $i ++ ) {
	*	}
	 * Your call!
	 */


}