Predefined Constants

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- Predefined Constants

# Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

`SOLR_MAJOR_VERSION` (int)
`SOLR_MINOR_VERSION` (int)
`SOLR_PATCH_VERSION` (int)
`SOLR_EXTENSION_VERSION` (string)