Explore WordPress development, from foundational setup to customization and plugin creation, while learning core PHP concepts like PHP variables, PHP loops, PHP functions, and more.

Become a Web Developer

This module dives into creating dynamic websites with WordPress, starting from setting up the development environment to mastering core components like themes and plugins. We will learn PHP fundamentals such as PHP variables, PHP operators, PHP loops, PHP functions, and PHP arrays. Additionally, you’ll customize themes, design pages, implement custom post types and fields, and integrate JavaScript. You’ll also explore the WordPress REST API, manage user roles and permissions, and delve into advanced topics like the WordPress Block Editor and plugin development for building robust, scalable applications.

Learn PHP

prepends passed value at the front of an array

prepends passed key at the front of an array

<code>array_unshift()</code> function

pushes passed value at the end of an array

Array
(
    [0] => 15
    [1] => 14
    [2] => 2
    [3] => 4
    [4] => 5
    [5] => 9
)

Array
(
    [0] => 14
    [1] => 15
    [2] => 2
    [3] => 4
    [4] => 5
    [5] => 9
)

Array
(
    [0] => 2
    [1] => 4
    [2] => 5
    [3] => 9
    [4] => 14
    [5] => 15
)

What will be the output of the following code:
```php
<?php
$arr = array(2,4,5,9);
array_unshift($arr, 14, 15);
print_r($arr);
?>

```

What will be the output of the following code:
<pre><code class="language-php">&lt;?php
$arr = array(2,4,5,9);
array_unshift($arr, 14, 15);
print_r($arr);
?&gt;

</code></pre>

Array
(
    [0] => 2
    [1] => 4
    [2] => 5
    [3] => 9
    [4] => 15
    [5] => 14
)

What will be the output of the following code:
```php
<?php
$arr = array(2,4,5,9);
array_push($arr, 14, 15);
print_r($arr);
?>

```

What will be the output of the following code:
<pre><code class="language-php">&lt;?php
$arr = array(2,4,5,9);
array_push($arr, 14, 15);
print_r($arr);
?&gt;

</code></pre>

Array
(
    [0] => 1
    [1] => 3
    [2] => 5
    [4] => 9
    [5] => 11
)

Array
(
    [0] => 1
    [2] => 5
    [3] => 7
    [4] => 9
    [5] => 11
)

Array
(
    [3] => 7
    [4] => 9
    [5] => 11
)

What will be the output of the following code:
```php
<?php
$arr=array(1,3,5,7,9,11);
unset($arr[3]);
print_r($arr);
?>
```

What will be the output of the following code:
<pre><code class="language-php">&lt;?php
$arr=array(1,3,5,7,9,11);
unset($arr[3]);
print_r($arr);
?&gt;
</code></pre>

Array
(
    [0] => 20
    [1] => 4
    [2] => 1
    [3] => 0
    [4] => -22
    [5] => -44
)

Array
(
    [0] => -44
    [1] => -22
    [2] => 0
    [3] => 1
    [4] => 4
    [5] => 20
)

Array
(
    [0] => -22
    [1] => 4
    [2] => 1
    [3] => 20
    [4] => 0
    [5] => -44
)

Array
(
    [5] => -44
    [4] => 0
    [3] => 20
    [2] => 1
    [1] => 4
    [0] => -22
)

What will be output of the following code:
```php
<?php
$numbers = array(-22, 4, 1, 20, 0, -44);
sort($numbers);
print_r($numbers);
?>
```

What will be output of the following code:
<pre><code class="language-php">&lt;?php
$numbers = array(-22, 4, 1, 20, 0, -44);
sort($numbers);
print_r($numbers);
?&gt;
</code></pre>

What will be the output of the following code:
```php
<?php
$numbers = array(-22, 4, 1, 20, 0,-44);
ksort($numbers);
print_r($numbers);
?>
```

What will be the output of the following code:
<pre><code class="language-php">&lt;?php
$numbers = array(-22, 4, 1, 20, 0,-44);
ksort($numbers);
print_r($numbers);
?&gt;
</code></pre>

In the next chapter, you will learn about classes and inheritance.

Solve this quiz to practice your concepts of arrays.

Getting Started

Variables

Operators

Conditional Statements

Loops

Functions

Strings

Arrays

PHP Assessment 1

Conclusion

Quiz 2