What are the potential limitations or constraints when using preg_match_all in PHP for parsing large XML files?

When using preg_match_all in PHP for parsing large XML files, one potential limitation is memory consumption due to loading the entire XML file into memory. To overcome this limitation, it is recommended to use XML parsers like SimpleXML or DOMDocument, which can efficiently handle large XML files without loading the entire document into memory. 

// Using SimpleXML to parse large XML files
$xml = simplexml_load_file('large_xml_file.xml');
foreach ($xml->children() as $child) {
    // Process each child element
}

Keywords

preg_match_all PHP XML limitations constraints

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