46 lines
834 B
Markdown
46 lines
834 B
Markdown
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---
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title: Functions
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---
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## PHP Functions Introduction
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A function is a block of statements that can be used repeatedly in a program.
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### Simple Function + Call
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```php
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function say_hello() {
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return "Hello!";
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}
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echo say_hello();
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```
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### Simple Function + Parameter + Call
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```php
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function say_hello($friend) {
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return "Hello " . $friend . "!";
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}
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echo say_hello('Tommy');
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```
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### strtoupper - Makes all Chars BIGGER AND BIGGER!
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```php
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function makeItBIG($a_lot_of_names) {
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foreach($a_lot_of_names as $the_simpsons) {
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$BIG[] = strtoupper($the_simpsons);
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}
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return $BIG;
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}
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$a_lot_of_names = ['Homer', 'Marge', 'Bart', 'Maggy', 'Lisa'];
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var_dump(makeItBIG($a_lot_of_names));
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```
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#### More Information:
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* <a href="https://secure.php.net/manual/en/functions.user-defined.php">php.net user defined functions manual</a>
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