43 lines
990 B
Markdown
43 lines
990 B
Markdown
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# Control structure - `function`
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Sometimes comes a need to have a small subset of code which is gonna be used twice (or more)
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in the same view. Instead of simply duplicating the code (with everything that can then go wrong if you ever need
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to play with it later), you could create a `function`.
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Functions are declared exactly like vanilla PHP.
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**[PICEA]** So, using this code:
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```html
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{% use Psr\Http\Message\ServerRequestInterface %}
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{% title "My generic title" %}
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{% function printCustomTitle(ServerRequestInterface $request) : bool %}
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{% if $request->getAttribute('lean.route')->name === 'home' %}
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<h4 class="title">This is a custom title !</h4>
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{% return true %}
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{% endif %}
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{% return false %}
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{% endfunction %}
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{% if ! printCustomTitle($request) %}
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<h1>{{ title() }}</h1>
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{% endif %}
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```
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**[HTML]** Would yield:
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*page **is** 'home'*
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```php
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<h4>This is a custom title !</h4>
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```
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*page **is not** 'home'*
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```php
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<h4>My generic title</h4>
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```
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