Summary of commonly used array and string functions in PHP
This article mainly shares with you a summary of commonly used array and string functions in PHP, hoping to help everyone.
Commonly used string functions:
//去除字符串首尾空格和特殊字符 trim（） //截取字符串 substr() 、mb_substr() //查找指定字符串在目标字符串中首次出现的位置 strpos() //查找指定字符串在目标字符串中最后一次出现的位置 strrpos() //替换字符串 str_replace() substr_replace() //计算字符串长度 strlen() //转义 和 还原 字符串 (', '', \ , NULL ) addslashes() stripslashes() //重复字符串 str_repeat() //打乱字符串 str_shuffle() //分割字符串 explode() 数组常用函数 //创建数组 array() //创建指定范围内数组 range() //检查数组中是否存在某个值 in_array() //检测变量是否是数组 is_array() //计算数组中元素个数 count() // 获取数组中部分或所有键名 array_keys() // 获取数组中所有的值 array_values() // 计算数组中所有值的和 array_sum() //搜索给定值的键名 array_search() //从数组中随机取出一个或多个单元 array_rand() //数组排序 sort() [不保持索引] asort() [保持索引] //打乱数组 shuffle() //拆分数组 array_chunk() //合并数组 array_merge() //将元素压入数组末尾(入栈) array_push()
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