(PECL solr >= 0.9.2)
SolrObject::offsetUnset — Unsets the value for the property
$property_name): voidUnsets the value for the property. This is used when the object is treated as an array. This object is read-only. This should never be attempted.
property_nameThe name of the property.
成功时返回 true， 或者在失败时返回 false。
示例 #1 SolrObject::offsetUnset() example
<?php
/* ... */
?>以上示例的输出类似于：
...