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mysqli_field_tell

(PHP 5)

mysqli_field_tell

(no version information, might be only in CVS)

result->current_field -- Get current field offset of a result pointer

Description

Процедурный стиль:

int mysqli_field_tell ( mysqli_result result )

Объектно-ориентированный стиль (property):

class mysqli_result {

int current_field

}

Returns the position of the field cursor used for the last mysqli_fetch_field() call. This value can be used as an argument to mysqli_field_seek().

Возвращаемые значения

Returns current offset of field cursor.

Примеры

Пример 1. Объектно-ориентированный стиль


<?php

$mysqli 
= new 
mysqli
(
"localhost"
, 
"my_user"
, 
"my_password"
, 
"world"
);




/* check connection */


if (
mysqli_connect_errno
()) {

    
printf
(
"Connect failed: %s\n"
, 
mysqli_connect_error
());

    exit();

}




$query 
= 
"SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5"
;



if (
$result 
= 
$mysqli
->
query
(
$query
)) {



    
/* Get field information for all columns */

    
while (
$finfo 
= 
$result
->
fetch_field
()) {



        
/* get fieldpointer offset */

        
$currentfield 
= 
$result
->
current_field
;



        
printf
(
"Column %d:\n"
, 
$currentfield
); 

        
printf
(
"Name:     %s\n"
, 
$finfo
->
name
);

        
printf
(
"Table:    %s\n"
, 
$finfo
->
table
);

        
printf
(
"max. Len: %d\n"
, 
$finfo
->
max_length
);

        
printf
(
"Flags:    %d\n"
, 
$finfo
->
flags
);

        
printf
(
"Type:     %d\n\n"
, 
$finfo
->
type
);

    }    

    
$result
->
close
();

}




/* close connection */


$mysqli
->
close
();


?>

Пример 2. Процедурный стиль


<?php

$link 
= 
mysqli_connect
(
"localhost"
, 
"my_user"
, 
"my_password"
, 
"world"
);




/* check connection */


if (
mysqli_connect_errno
()) {

    
printf
(
"Connect failed: %s\n"
, 
mysqli_connect_error
());

    exit();

}




$query 
= 
"SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5"
;



if (
$result 
= 
mysqli_query
(
$link
, 
$query
)) {



    
/* Get field information for all fields */

    
while (
$finfo 
= 
mysqli_fetch_field
(
$result
)) {

 

        
/* get fieldpointer offset */

        
$currentfield 
= 
mysqli_field_tell
(
$result
);



        
printf
(
"Column %d:\n"
, 
$currentfield
); 

        
printf
(
"Name:     %s\n"
, 
$finfo
->
name
);

        
printf
(
"Table:    %s\n"
, 
$finfo
->
table
);

        
printf
(
"max. Len: %d\n"
, 
$finfo
->
max_length
);

        
printf
(
"Flags:    %d\n"
, 
$finfo
->
flags
);

        
printf
(
"Type:     %d\n\n"
, 
$finfo
->
type
);

    }

    
mysqli_free_result
(
$result
);

}




/* close connection */


mysqli_close
(
$link
);


?>

Результат выполнения данного примера:

Column 1:
Name:     Name
Table:    Country
max. Len: 11
Flags:    1
Type:     254

Column 2:
Name:     SurfaceArea
Table:    Country
max. Len: 10
Flags:    32769
Type:     4

Все функции PHP:

mysqli_field_tell

Description

Возвращаемые значения

Смотрите также

Примеры