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mysqli_result::fetch_assocmysqli_fetch_assoc
217
printf ("%s (%s)\n", $row["Name"], $row["CountryCode"]);
}
/* free result set */
$result->free();
}
/* close connection */
$mysqli->close();
?>
Example 3.115 Procedural style
<?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();
}
$query = "SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 50,5";
if ($result = mysqli_query($link, $query)) {
/* fetch associative array */
while ($row = mysqli_fetch_assoc($result)) {
printf ("%s (%s)\n", $row["Name"], $row["CountryCode"]);
}
/* free result set */
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>
The above examples will output:
Pueblo (USA)
Arvada (USA)
Cape Coral (USA)
Green Bay (USA)
Santa Clara (USA)
Example 3.116 A mysqli_result example comparing iterator usage
<?php
$c = mysqli_connect('127.0.0.1','user', 'pass');
// Using iterators (support was added with PHP 5.4)
foreach ( $c->query('SELECT user,host FROM mysql.user') as $row ) {
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mysqli_result::fetch_field_directmysqli_fetch_field_direct
218
printf("'%s'@'%s'\n", $row['user'], $row['host']);
}
echo "\n==================\n";
// Not using iterators
$result = $c->query('SELECT user,host FROM mysql.user');
while ($row = $result->fetch_assoc()) {
printf("'%s'@'%s'\n", $row['user'], $row['host']);
}
?>
The above example will output something similar to:
'root'@'192.168.1.1'
'root'@'127.0.0.1'
'dude'@'localhost'
'lebowski'@'localhost'
==================
'root'@'192.168.1.1'
'root'@'127.0.0.1'
'dude'@'localhost'
'lebowski'@'localhost'
See Also
mysqli_fetch_array
mysqli_fetch_row
mysqli_fetch_object
mysqli_query
mysqli_data_seek
3.11.6 mysqli_result::fetch_field_direct,
mysqli_fetch_field_direct
Copyright 1997-2014 the PHP Documentation Group.
• mysqli_result::fetch_field_direct
mysqli_fetch_field_direct
Fetch meta-data for a single field
Description
Object oriented style
object mysqli_result::fetch_field_direct(
int fieldnr);
Procedural style
object mysqli_fetch_field_direct(
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mysqli_result::fetch_field_directmysqli_fetch_field_direct
219
mysqli_result result,
int fieldnr);
Returns an object which contains field definition information from the specified result set.
Parameters
result
Procedural style only: A result set identifier returned by mysqli_query,
mysqli_store_result or mysqli_use_result.
fieldnr
The field number. This value must be in the range from 0 to number of
fields - 1.
Return Values
Returns an object which contains field definition information or FALSE if no field information for specified
fieldnr is available.
Table 3.17 Object attributes
Attribute
Description
name
The name of the column
orgname
Original column name if an alias was specified
table
The name of the table this field belongs to (if not
calculated)
orgtable
Original table name if an alias was specified
def
The default value for this field, represented as a
string
max_length
The maximum width of the field for the result set.
length
The width of the field, as specified in the table
definition.
charsetnr
The character set number for the field.
flags
An integer representing the bit-flags for the field.
type
The data type used for this field
decimals
The number of decimals used (for numeric fields)
Examples
Example 3.117 Object oriented style
<?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();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Name LIMIT 5";
if ($result = $mysqli->query($query)) {
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Create PDF document from OpenOffice Presentation in both .NET WinForms and ODT, ODS, ODP forms to fillable PDF formats in Online source code for C#.NET class.
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mysqli_result::fetch_field_directmysqli_fetch_field_direct
220
/* Get field information for column 'SurfaceArea' */
$finfo = $result->fetch_field_direct(1);
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", $finfo->type);
$result->close();
}
/* close connection */
$mysqli->close();
?>
Example 3.118 Procedural style
<?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();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Name LIMIT 5";
if ($result = mysqli_query($link, $query)) {
/* Get field information for column 'SurfaceArea' */
$finfo = mysqli_fetch_field_direct($result, 1);
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", $finfo->type);
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>
The above examples will output:
Name:     SurfaceArea
Table:    Country
max. Len: 10
Flags:    32769
Type:     4
See Also
VB.NET Create PDF from Word Library to convert docx, doc to PDF in
formatting. Create PDF files from both DOC and DOCX formats. Convert multiple pages Word to fillable and editable PDF documents. Professional
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VB.NET Create PDF from PowerPoint Library to convert pptx, ppt to
Convert multiple pages PowerPoint to fillable and editable PDF documents. Easy to create searchable and scanned PDF files from PowerPoint.
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mysqli_result::fetch_fieldmysqli_fetch_field
221
mysqli_num_fields
mysqli_fetch_field
mysqli_fetch_fields
3.11.7 mysqli_result::fetch_field, mysqli_fetch_field
Copyright 1997-2014 the PHP Documentation Group.
• mysqli_result::fetch_field
mysqli_fetch_field
Returns the next field in the result set
Description
Object oriented style
object mysqli_result::fetch_field();
Procedural style
object mysqli_fetch_field(
mysqli_result result);
Returns the definition of one column of a result set as an object. Call this function repeatedly to retrieve
information about all columns in the result set.
Parameters
result
Procedural style only: A result set identifier returned by mysqli_query,
mysqli_store_result or mysqli_use_result.
Return Values
Returns an object which contains field definition information or FALSE if no field information is available.
Table 3.18 Object properties
Property
Description
name
The name of the column
orgname
Original column name if an alias was specified
table
The name of the table this field belongs to (if not
calculated)
orgtable
Original table name if an alias was specified
def
Reserved for default value, currently always ""
db
Database (since PHP 5.3.6)
catalog
The catalog name, always "def" (since PHP 5.3.6)
max_length
The maximum width of the field for the result set.
length
The width of the field, as specified in the table
definition.
charsetnr
The character set number for the field.
flags
An integer representing the bit-flags for the field.
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mysqli_result::fetch_fieldmysqli_fetch_field
222
Property
Description
type
The data type used for this field
decimals
The number of decimals used (for integer fields)
Examples
Example 3.119 Object oriented style
<?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()) {
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();
?>
Example 3.120 Procedural style
<?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)) {
printf("Name:     %s\n", $finfo->name);
printf("Table:    %s\n", $finfo->table);
printf("max. Len: %d\n", $finfo->max_length);
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mysqli_result::fetch_fieldsmysqli_fetch_fields
223
printf("Flags:    %d\n", $finfo->flags);
printf("Type:     %d\n\n", $finfo->type);
}
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>
The above examples will output:
Name:     Name
Table:    Country
max. Len: 11
Flags:    1
Type:     254
Name:     SurfaceArea
Table:    Country
max. Len: 10
Flags:    32769
Type:     4
See Also
mysqli_num_fields
mysqli_fetch_field_direct
mysqli_fetch_fields
mysqli_field_seek
3.11.8 mysqli_result::fetch_fieldsmysqli_fetch_fields
Copyright 1997-2014 the PHP Documentation Group.
• mysqli_result::fetch_fields
mysqli_fetch_fields
Returns an array of objects representing the fields in a result set
Description
Object oriented style
array mysqli_result::fetch_fields();
Procedural style
array mysqli_fetch_fields(
mysqli_result result);
This function serves an identical purpose to the mysqli_fetch_field function with the single difference
that, instead of returning one object at a time for each field, the columns are returned as an array of
objects.
mysqli_result::fetch_fieldsmysqli_fetch_fields
224
Parameters
result
Procedural style only: A result set identifier returned by mysqli_query,
mysqli_store_result or mysqli_use_result.
Return Values
Returns an array of objects which contains field definition information or FALSE if no field information is
available.
Table 3.19 Object properties
Property
Description
name
The name of the column
orgname
Original column name if an alias was specified
table
The name of the table this field belongs to (if not
calculated)
orgtable
Original table name if an alias was specified
max_length
The maximum width of the field for the result set.
length
The width of the field, in bytes, as specified in the
table definition. Note that this number (bytes) might
differ from your table definition value (characters),
depending on the character set you use. For
example, the character set utf8 has 3 bytes per
character, so varchar(10) will return a length of 30
for utf8 (10*3), but return 10 for latin1 (10*1).
charsetnr
The character set number (id) for the field.
flags
An integer representing the bit-flags for the field.
type
The data type used for this field
decimals
The number of decimals used (for integer fields)
Examples
Example 3.121 Object oriented style
<?php
$mysqli = new mysqli("127.0.0.1", "root", "foofoo", "sakila");
/* check connection */
if ($mysqli->connect_errno) {
printf("Connect failed: %s\n", $mysqli->connect_error);
exit();
}
foreach (array('latin1', 'utf8') as $charset) {
// Set character set, to show its impact on some values (e.g., length in bytes)
$mysqli->set_charset($charset);
$query = "SELECT actor_id, last_name from actor ORDER BY actor_id";
echo "======================\n";
echo "Character Set: $charset\n";
mysqli_result::fetch_fieldsmysqli_fetch_fields
225
echo "======================\n";
if ($result = $mysqli->query($query)) {
/* Get field information for all columns */
$finfo = $result->fetch_fields();
foreach ($finfo as $val) {
printf("Name:      %s\n",   $val->name);
printf("Table:     %s\n",   $val->table);
printf("Max. Len:  %d\n",   $val->max_length);
printf("Length:    %d\n",   $val->length);
printf("charsetnr: %d\n",   $val->charsetnr);
printf("Flags:     %d\n",   $val->flags);
printf("Type:      %d\n\n", $val->type);
}
$result->free();
}
}
$mysqli->close();
?>
Example 3.122 Procedural style
<?php
$link = mysqli_connect("127.0.0.1", "my_user", "my_password", "sakila");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
foreach (array('latin1', 'utf8') as $charset) {
// Set character set, to show its impact on some values (e.g., length in bytes)
mysqli_set_charset($link, $charset);
$query = "SELECT actor_id, last_name from actor ORDER BY actor_id";
echo "======================\n";
echo "Character Set: $charset\n";
echo "======================\n";
if ($result = mysqli_query($link, $query)) {
/* Get field information for all columns */
$finfo = mysqli_fetch_fields($result);
foreach ($finfo as $val) {
printf("Name:      %s\n",   $val->name);
printf("Table:     %s\n",   $val->table);
printf("Max. Len:  %d\n",   $val->max_length);
printf("Length:    %d\n",   $val->length);
printf("charsetnr: %d\n",   $val->charsetnr);
printf("Flags:     %d\n",   $val->flags);
printf("Type:      %d\n\n", $val->type);
}
mysqli_free_result($result);
}
}
mysqli_close($link);
mysqli_result::fetch_objectmysqli_fetch_object
226
?>
The above examples will output:
======================
Character Set: latin1
======================
Name:      actor_id
Table:     actor
Max. Len:  3
Length:    5
charsetnr: 63
Flags:     49699
Type:      2
Name:      last_name
Table:     actor
Max. Len:  12
Length:    45
charsetnr: 8
Flags:     20489
Type:      253
======================
Character Set: utf8
======================
Name:      actor_id
Table:     actor
Max. Len:  3
Length:    5
charsetnr: 63
Flags:     49699
Type:      2
Name:      last_name
Table:     actor
Max. Len:  12
Length:    135
charsetnr: 33
Flags:     20489
See Also
mysqli_num_fields
mysqli_fetch_field_direct
mysqli_fetch_field
3.11.9 mysqli_result::fetch_objectmysqli_fetch_object
Copyright 1997-2014 the PHP Documentation Group.
• mysqli_result::fetch_object
mysqli_fetch_object
Returns the current row of a result set as an object
Description
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