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<?php |
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namespace Helldar\Support\Helpers; |
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use Exception; |
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use Helldar\Support\Exceptions\NotValidUrlException; |
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use Helldar\Support\Facades\Helpers\Filesystem\File; |
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use Helldar\Support\Facades\Helpers\HttpBuilder; |
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final class Http |
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{ |
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/** |
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* Checks whether the string is URL address. |
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* |
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* @param string|null $url |
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* |
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* @return bool |
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*/ |
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public function isUrl(string $url = null): bool |
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{ |
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return filter_var($url, FILTER_VALIDATE_URL) !== false; |
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} |
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public function validateUrl(string $url = null): void |
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{ |
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if (! $this->isUrl($url)) { |
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throw new NotValidUrlException($url); |
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} |
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} |
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/** |
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* Checks whether a URL exists. |
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* |
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* @param string $url |
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* |
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* @return bool |
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*/ |
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public function exists(string $url): bool |
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{ |
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$this->validateUrl($url); |
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try { |
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$headers = get_headers($url); |
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$key = array_search('HTTP/', $headers); |
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$value = $headers[$key] ?? null; |
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preg_match('[2-3]{1}\d{2}\sOK', $value, $matches); |
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return count($matches) > 0; |
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} catch (Exception $e) { |
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return false; |
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} |
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} |
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/** |
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* Get the domain name from the URL. |
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* |
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* @param string|null $url |
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* @param string|null $default |
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* |
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* @throws \Helldar\Support\Exceptions\NotValidUrlException |
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* |
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* @return string |
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*/ |
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public function domain(string $url = null, string $default = null): string |
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{ |
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if (is_null($url)) { |
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return $default ?: $_SERVER['HTTP_HOST'] ?? 'localhost'; |
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} |
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$this->validateUrl($url); |
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return HttpBuilder::parse($url)->getHost(); |
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} |
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/** |
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* Retrieving the current subdomain name. |
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* |
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* @param string|null $url |
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* @param string|null $default |
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* |
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* @return string|null |
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*/ |
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public function subdomain(string $url = null, string $default = null): ?string |
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{ |
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$host = explode('.', HttpBuilder::parse($url)->getHost()); |
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return count($host) > 2 ? reset($host) : $default; |
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} |
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public function host(string $url = null): ?string |
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{ |
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if (! $this->isUrl($url)) { |
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return null; |
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} |
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return HttpBuilder::same() |
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->parse($url, PHP_URL_SCHEME) |
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->parse($url, PHP_URL_HOST) |
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->compile(); |
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} |
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public function scheme(string $url): ?string |
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{ |
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$this->validateUrl($url); |
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return HttpBuilder::parse($url)->getScheme(); |
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} |
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/** |
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* Check the existence of the file and return the default value if it is missing. |
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* |
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* @param string $url |
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* @param string|null $default |
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* |
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* @return string|null |
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*/ |
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public function image(string $url, string $default = null): ?string |
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{ |
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return $this->isUrl($url) |
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? ($this->exists($url) ? $url : $default) |
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: (File::exists($url) ? $url : $default); |
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} |
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} |
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andrey-helldar /
support
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: