php mysql获取表字段名称和字段信息的三种方法

php  /  管理员 发布于 7年前   351

php mysql获取表字段名称和字段信息的三种方法

先给出本实例中使用的表的信息：

使用desc获取表字段信息

php代码如下：

运行结果：

Array(  [Field] => student_id  [Type] => int(4)  [Null] => NO  [Key] => PRI  [Default] =>   [Extra] => auto_increment)Array(  [Field] => student_name  [Type] => varchar(50)  [Null] => NO  [Key] =>   [Default] =>   [Extra] => )Array(  [Field] => class_id  [Type] => int(4)  [Null] => NO  [Key] =>   [Default] =>   [Extra] => )Array(  [Field] => total_score  [Type] => int(4)  [Null] => NO  [Key] =>   [Default] =>   [Extra] => ) 

使用SHOW FULL FIELDS获取表字段信息

php代码如下：

运行结果：

Array(  [Field] => student_id  [Type] => int(4)  [Collation] =>   [Null] => NO  [Key] => PRI  [Default] =>   [Extra] => auto_increment  [Privileges] => select,insert,update,references  [Comment] => )Array(  [Field] => student_name  [Type] => varchar(50)  [Collation] => latin1_swedish_ci  [Null] => NO  [Key] =>   [Default] =>   [Extra] =>   [Privileges] => select,insert,update,references  [Comment] => )Array(  [Field] => class_id  [Type] => int(4)  [Collation] =>   [Null] => NO  [Key] =>   [Default] =>   [Extra] =>   [Privileges] => select,insert,update,references  [Comment] => )Array(  [Field] => total_score  [Type] => int(4)  [Collation] =>   [Null] => NO  [Key] =>   [Default] =>   [Extra] =>   [Privileges] => select,insert,update,references  [Comment] => ) 

使用mysql_fetch_field方法获取表字段信息

php代码如下：

运行结果如下：

stdClass Object(  [name] => student_id  [table] => student  [def] =>   [max_length] => 1  [not_null] => 1  [primary_key] => 1  [multiple_key] => 0  [unique_key] => 0  [numeric] => 1  [blob] => 0  [type] => int  [unsigned] => 0  [zerofill] => 0)stdClass Object(  [name] => student_name  [table] => student  [def] =>   [max_length] => 5  [not_null] => 1  [primary_key] => 0  [multiple_key] => 0  [unique_key] => 0  [numeric] => 0  [blob] => 0  [type] => string  [unsigned] => 0  [zerofill] => 0)stdClass Object(  [name] => class_id  [table] => student  [def] =>   [max_length] => 1  [not_null] => 1  [primary_key] => 0  [multiple_key] => 0  [unique_key] => 0  [numeric] => 1  [blob] => 0  [type] => int  [unsigned] => 0  [zerofill] => 0)stdClass Object(  [name] => total_score  [table] => student  [def] =>   [max_length] => 3  [not_null] => 1  [primary_key] => 0  [multiple_key] => 0  [unique_key] => 0  [numeric] => 1  [blob] => 0  [type] => int  [unsigned] => 0  [zerofill] => 0)

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