PHPExcel not loading .xlsx in PHP <= 5.2.10

[imTigger]

I know PHP 5.2 is obsoleted, but it still worth mentioning because PHPExcel claimed to support PHP 5.2.0+.

It's caused by two libxml_disable_entity_loader() function calls in /Settings.php
Because libxml_disable_entity_loader() is not available until PHP 5.2.11.
Call to such function in previous version caused fatal error (which is muted by the @ operator).

http://php.net/manual/en/function.libxml-disable-entity-loader.php

[frost-nzcr4]

Duplicate of #339