(PECL solr >= 0.9.2)
SolrQuery::setHighlightMaxAlternateFieldLength — Sets the maximum number of characters of the field to return
public SolrQuery::setHighlightMaxAlternateFieldLength ( int $fieldLength [, string $field_override ] ) : SolrQuery
If SolrQuery::setHighlightAlternateField() was passed the value true, this parameter specifies the maximum number of characters of the field to return
Any value less than or equal to 0 means unlimited.
fieldLength
The length of the field
field_override
The name of the field.
Returns the current SolrQuery object, if the return value is used.
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https://www.php.net/manual/en/solrquery.sethighlightmaxalternatefieldlength.php