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<?php |
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/* |
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* This file is part of the cfdi-xslt project. |
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* |
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* (c) Kinedu |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Kinedu\CfdiXslt; |
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use SimpleXMLElement; |
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use DOMDocument; |
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use DOMXpath; |
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class Retrieve |
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{ |
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/** |
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* SAT Endpoint |
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* |
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* @var string |
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*/ |
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const SAT_ENDPOINT = 'http://www.sat.gob.mx/sitio_internet/cfd/3/cadenaoriginal_3_3/cadenaoriginal_3_3.xslt'; |
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/** |
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* @return array |
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*/ |
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protected function getIncludeFiles(): array |
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{ |
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$files[] = static::SAT_ENDPOINT; |
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$xml = new SimpleXMLElement( |
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file_get_contents(static::SAT_ENDPOINT) |
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); |
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foreach ($xml->xpath('//xsl:include') as $node) { |
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$files[] = reset($node['href']); |
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} |
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return $files; |
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} |
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/** |
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* @param string $directory |
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* |
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* @return bool |
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*/ |
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public function changeNodeReference(string $directory): bool |
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{ |
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$file = $directory.$this->getFileName(static::SAT_ENDPOINT); |
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$dom = new DOMDocument(); |
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$dom->load($file); |
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$xpath = new DOMXpath($dom); |
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$query = '//xsl:include'; |
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foreach ($xpath->query($query) as $node) { |
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$href = $node->getAttribute('href'); |
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$node->setAttribute( |
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'href', |
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$this->getFileName($href) |
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); |
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} |
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return $dom->save($file); |
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} |
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/** |
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* @param string $directory |
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* |
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* @return bool |
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*/ |
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public function download(string $directory): bool |
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{ |
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foreach ($this->getIncludeFiles() as $url) { |
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$file = file_get_contents($url); |
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$fileName = $this->getFileName($url); |
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file_put_contents("{$directory}{$fileName}", $file); |
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} |
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$this->changeNodeReference($directory); |
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return true; |
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} |
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/** |
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* @param string $file |
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* |
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* @return string |
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*/ |
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protected function getFileName(string $file): string |
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{ |
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return basename($file); |
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} |
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} |
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Kinedu /
cfdi-xslt
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.