PHP MySQL three ways to get table field names and fields information

Source: Internet
Author: User
Tags php mysql
PHP MySQL three ways to get table field names and fields information

The information for the tables used in this example is given first:



Get table field information using DESC

The PHP code is as follows:

<?php   mysql_connect ("localhost", "root", "" ");  mysql_select_db ("test");  $query = "desc student";  $result = mysql_query ($query);  while ($row =mysql_fetch_assoc ($result)) {Print_r ($row);  }? >



Operation Result:

Array (  [Field] = student_id  [Type] + int (4)  [Null] = + NO  [Key] = = PRI  [Default] = =   [Extra] = auto_increment) Array (  [Field] = Student_name  [Type] = = varchar (+)  [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] = =)



Get table field information using Show full fields

The PHP code is as follows:

<?php   mysql_connect ("localhost", "root", "" ");  mysql_select_db ("test");  $query = "SHOW full COLUMNS from student";  $result = mysql_query ($query);  while ($row =mysql_fetch_assoc ($result)) {Print_r ($row);  }? >



Operation Result:

array ([Field] = student_id [Type] + int (4) [Collation] = [Null] =&G T NO [Key] = PRI [Default] = [Extra] = auto_increment [Privileges] = select,insert,update,references [ Comment] = Array ([Field] = student_name [Type] = varchar ([Collation] = latin1_swedish_ci [Null] + NO [Key] + [Default] = [Extra] = [privileges] = select,insert,update,references [Comment] =& Gt   ) 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] =) 



Get table field information using the Mysql_fetch_field method

The PHP code is as follows:

<?php  mysql_connect ("localhost", "root", "" ");  mysql_select_db ("test");  $query = "SELECT * FROM student LIMIT 1";  $result = mysql_query ($query);  $fields = Mysql_num_fields ($result);  for ($count =0; $count < $fields; $count + +)  {   $field = Mysql_fetch_field ($result, $count);  Print_r ($field);  }? >



The results of the operation are as follows:

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] =& Gt 0 [blob] + 0 [Type] = = string [unsigned] = 0 [Zerofill] + 0) stdClass Object ([name] = class_id [t   ABLE] = 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) Stdcla SS Object ([name] = + total_score [table] + student [def] = [Max_length] + 3 [not_null] = 1 [prim Ary_key] = 0 [mUltiple_key] + 0 [Unique_key] = 0 [Numeric] = 1 [blob] + 0 [Type] = int [unsigned] + 0 [zero Fill] = 0)

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