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Remove and Compact Array

Array
(
    [0] => 2
    [1] =>  6
    [2] =>  8
)

start a

Array
(
    [0] => Apple
    [1] => Pear
    [2] => Milk
    [3] => Strawberry
    [4] => Banna
    [5] => Berries
    [6] => Pie
    [7] => Cake
    [8] => Bread
    [9] => Cupcakes
)

end a

Array
(
    [0] => Apple
    [1] => Pear
    [2] => Strawberry
    [3] => Banna
    [4] => Berries
    [5] => Cake
    [6] => Cupcakes
)

end d

Array
(
)

CODE FOLLOWS


<?php

    include('../includes/header4.php');
    echo('<h1>Remove and Compact Array</h1>');

    $a = array("Apple", "Pear", "Milk", "Strawberry", "Banna", "Berries", "Pie", "Cake", "Bread", "Cupcakes");

    $b = "2, 6, 8,";

    $c = explode(',', $b);
    array_pop($c);
    echo('<pre>');
    print_r($c);
    echo('</pre>');

    $d = array();

    echo('start  a<pre>');
    print_r($a);
    echo('</pre>');

    // test
    foreach ($a as $key => $value)
        {
        foreach ($c as $value)
            {
            if ($key == $value)
                {
               unset($a[$key]);
                }
            }
        }

    $a = array_values($a);

    // OR

//    foreach ($a as $key => $value)
//        {
//        if (isset($a[$key]))
//            {
//            $a[] = $value;
//            }
//        }

    echo('end a <pre>');
    print_r($a);
    echo('</pre>');

    echo('end d<pre>');
    print_r($d);
    echo('</pre>');


    include('../includes/footer4.php');

    // works
//    foreach ($a as $key => $value)
//        {
//        foreach ($c as $value)
//            {
//            if ($key == $value)
//                {
//                $a[$key] = "***";
//                }
//            }
//        }
//
//    foreach ($a as $key => $value)
//        {
//        if ($a[$key] != "***")
//            {
//            $d[] = $value;
//            }
//        }
?>

Last modified: October 25 2022

Line Count: 79

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