(PECL solr >= 0.9.2)
SolrQuery::getHighlightMaxAlternateFieldLength — Returns the maximum number of characters of the field to return
public SolrQuery::getHighlightMaxAlternateFieldLength ([ string $field_override ] ) : int
Returns the maximum number of characters of the field to return
field_override
The name of the field
Returns an integer on success and null if not set.
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https://www.php.net/manual/en/solrquery.gethighlightmaxalternatefieldlength.php