Magento 1.9.1.1 Compatibility

Question

Is Magento 1.9.1.1 compatible with PHP 7.1 and MySQL 5.7? And what is the system requirements for Magento 1.9.1.1 ?

Answer 1

No, Magento 1.x is not compatible with php7. The documentation clearly states:

Database

• MySQL 5.6 (Oracle or Percona)

PHP

Magento CE 1.9.2 and later, Magento EE 1.14.2 and later:

• PHP 5.6.x
• PHP 5.4.x
• PHP 5.5.x

Earlier Magento versions:

• PHP 5.4.x
• PHP 5.5.x

See http://devdocs.magento.com/guides/m1x/system-requirements.html