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oracle分割字符串split php如何用逗號把字符串分割為數(shù)組并把數(shù)組分別寫入數(shù)據(jù)庫?

php如何用逗號把字符串分割為數(shù)組并把數(shù)組分別寫入數(shù)據(jù)庫?分割字符串可以用explode函數(shù)$str = "1,2,3,4,5,6"$arr = explode(",",$str)foreach($a

php如何用逗號把字符串分割為數(shù)組并把數(shù)組分別寫入數(shù)據(jù)庫?

分割字符串可以用explode函數(shù)$str = "1,2,3,4,5,6"$arr = explode(",",$str)foreach($arr as $a){ #插入數(shù)據(jù)庫就可以}

MySQL截取和拆分字符串函數(shù)用法示例?

MySQL字符串函數(shù)substring:字符串截取

MySQL 字符串截取函數(shù):left(), right(), substring(), substring_index()。還有 mid(), substr()。其中,mid(), substr() 等價于 substring() 函數(shù),substring() 的功能非常強大和靈活。

1. 字符串截?。簂eft(str, length)

mysql> select left("example.com", 3)

-------------------------

| left("example.com", 3) |

-------------------------

| exa |

-------------------------

2. 字符串截取:right(str, length)

mysql> select right("example.com", 3)

--------------------------

| right("example.com", 3) |

--------------------------

| com |

--------------------------

實例:

#查詢某個字段后兩位字符

select right(last3, 2) as last2 from historydata limit 10

#從應該字段取后兩位字符更新到另外一個字段

update `historydata` set `last2`=right(last3, 2)