If the XML element in question contains attributes, you can also access the SimpleXMLElement as a PHP associative array, where each key in the array represents an attribute on the XML element.
如果该XML元素包含属性，也可以将SimpleXMLElement作为一个PHP关联数组进行访问，数组中的每个键表示xml元素的属性。
When the probe fires, you increment an associative array element for the given PID and process name.
当该探针触发时，将为特定的PID和进程名增加一个关联数组元素。
Notice also a new attribute introduced in this listing: The keyAttribute attribute, which tells XJConf which element attribute to consider when it sets the keys of the output associative array.
清单中还引入了一个新属性：keyAttribute 属性，它告诉XJConf设置输出关联数组的键时使用哪个元素属性。
Mathematics a set with an associative binary operation under which the set is closed, which contains an identity element and an inverse for every element in the set.
群：二元结合运算为闭合的数学集合，具有单位元素。集合中每一元素都有逆元素。
Mathematics a set with an associative binary operation under which the set is closed, which contains an identity element and an inverse for every element in the set.
群：二元结合运算为闭合的数学集合，具有单位元素。集合中每一元素都有逆元素。
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