> For the complete documentation index, see [llms.txt](https://joungkyun.gitbook.io/php-mod_korean-extension-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://joungkyun.gitbook.io/php-mod_korean-extension-reference/apis/check/is_url_lib.md).

# is\_url\_lib

## Proto type

```c
int is_url_lib (string url)
```

## Description

url 이 정확한 것인지 검사하는 함수. url 이 맞으면 url 을 리턴하고 틀리면 null 값을 리턴한다.

## Arguments

* (string) url - 체크를 하기 위한 URL

## Example

```php
<?php
$url = 'htt://oops.org';
$url = is_url_lib ($url);
if ( ! $url ) {
    echo "Invalid URL\n";
    exit;
}
?>
```

## See also

* [is\_email\_lib ()](https://github.com/joungkyun/php-mod_korean-extension-reference/tree/b5398f11118bd0b91db16b0f7beb7a37178353fd/Check/Check/is_email_lib.md)


---

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