What are some best practices for handling large XML files in PHP, especially in older versions like PHP 5.3?

Handling large XML files in PHP, especially in older versions like PHP 5.3, can be challenging due to memory limitations. One solution is to use XMLReader, a pull-based parser that allows you to process the XML file incrementally without loading the entire document into memory. 

$reader = new XMLReader();
$reader->open('large_file.xml');

while ($reader->read()) {
    // Process XML nodes here
}

$reader->close();

Keywords

SimpleXML XMLReader memory_limit stream processing XML parsing

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