PHP基础 数组函数 的总结_PHP教程

times)        统计元素在数组中出现的次数    
 *
 * 其它：
 * array_change_key_case ($arr,[caseTye])    键名转换：将字符类型的键转换为全大写或小写，
 *                                             可选参数：[caseTye]=CASE_UPPER/CASE_LOWER(默认为CASE_LOWER)
 *
 *
 * 
 




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