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Update php-interop.md about named constants #102

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Dec 8, 2024
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Update php-interop.md about named constants #102

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11 changes: 9 additions & 2 deletions content/documentation/php-interop.md
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Expand Up @@ -3,15 +3,22 @@ title = "PHP Interop"
weight = 14
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## Accessing super-globals
## Accessing global variables and named constants

Use the `php/` prefix to access the global variables in combination with `get`.
Use the `php/` prefix to access the global variables (superglobals) in combination with `get`.

```phel
(get php/$_SERVER "key") # Similar to $_SERVER['key']
(get php/$GLOBALS "argv") # Similar to $GLOBALS['argv']
```

Named constants set with PHP [`define`](https://www.php.net/manual/en/function.define.php) can be accessed in Phel via `php/CONSTANT_NAME`.

```
(php/define "MY_SETTING" "My value") # Calls PHP define('MY_SETTING', 'My value");
php/MY_SETTING # Returns "My value"
```

## Calling PHP functions

PHP comes with huge set of functions that can be called from Phel by just adding a `php/` prefix to the function name.
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