IT. Expert System.

PHP

Associates a PHP variable with a column for query fetches


oci_define_by_name

(PHP 5, PECL OCI8 >= 1.1.0)

oci_define_by_nameAssociates a PHP variable with a column for query fetches

Description

bool oci_define_by_name ( resource $statement , string $column_name , mixed &$variable [, int $type = SQLT_CHR ] )

Associates a PHP variable with a column for query fetches using oci_fetch().

The oci_define_by_name() call must occur before executing oci_execute().

Parameters

statement

A valid OCI8 statement identifier created by oci_parse() and executed by oci_execute(), or a REF CURSOR statement identifier.

column_name

The column name used in the query.

Use uppercase for Oracle's default, non-case sensitive column names. Use the exact column name case for case-sensitive column names.

variable

The PHP variable that will contain the returned column value.

type

The data type to be returned. Generally not needed. Note that Oracle-style data conversions are not performed. For example, SQLT_INT will be ignored and the returned data type will still be SQLT_CHR.

You can optionally use oci_new_descriptor() to allocate LOB/ROWID/BFILE descriptors.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 oci_define_by_name() example

<?php

$conn 
oci_connect('hr''welcome''localhost/XE');
if (!
$conn) {
    
$e oci_error();
    
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

$sql 'SELECT location_id, city FROM locations WHERE location_id < 1200';
$stid oci_parse($conn$sql);

// The defines MUST be done before executing
oci_define_by_name($stid'LOCATION_ID'$locid);
oci_define_by_name($stid'CITY'$city);

oci_execute($stid);

// Each fetch populates the previously defined variables with the next row's data
while (oci_fetch($stid)) {
    echo 
"Location id $locid is $city<br>\n";
}

// Displays:
//   Location id 1000 is Roma
//   Location id 1100 is Venice

oci_free_statement($stid);
oci_close($conn);

?>

Example #2 oci_define_by_name() with case sensitive column names

<?php

/*
  Before running, create the table with a case sensitive column name:
    CREATE TABLE mytab (id NUMBER, "MyDescription" VARCHAR2(30));
    INSERT INTO mytab (id, "MyDescription") values (1, 'Iced Coffee');
    COMMIT;
*/

$conn oci_connect('hr''welcome''localhost/XE');
if (!
$conn) {
    
$e oci_error();
    
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

$stid oci_parse($conn'SELECT * FROM mytab');

// Use uppercase for non case-sensitive column names
oci_define_by_name($stid'ID'$id);

// Use the exact case for case-sensitive column names
oci_define_by_name($stid'MyDescription'$mydesc);

oci_execute($stid);

while (
oci_fetch($stid)) {
    echo 
"id $id is $mydesc<br>\n";
}

// Displays:
//   id 1 is Iced Coffee

oci_free_statement($stid);
oci_close($conn);

?>

Example #3 oci_define_by_name() with LOB columns

<?php

/*
  Before running, create the table:
    CREATE TABLE mytab (id NUMBER, fruit CLOB);
    INSERT INTO mytab (id, fruit) values (1, 'apple');
    INSERT INTO mytab (id, fruit) values (2, 'orange');
    COMMIT;
*/

$conn oci_connect('hr''welcome''localhost/XE');
if (!
$conn) {
    
$e oci_error();
    
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

$stid oci_parse($conn'SELECT * FROM mytab');

// The defines MUST be done before executing
oci_define_by_name($stid'ID'$id);
oci_define_by_name($stid'FRUIT'$fruit);  // $fruit will become a LOB descriptor

oci_execute($stid);

while (
oci_fetch($stid)) {
    echo 
$id " is " $fruit->load(100) . "<br>\n";
}

// Displays:
//   1 is apple
//   2 is orange

$fruit->free();
oci_free_statement($stid);
oci_close($conn);

?>

Example #4 oci_define_by_name() with an explicit type

<?php

/*
  Before running, create the table:
    CREATE TABLE mytab (id NUMBER, fruit CLOB);
    INSERT INTO mytab (id, fruit) values (1, 'apple');
    INSERT INTO mytab (id, fruit) values (2, 'orange');
    COMMIT;
*/

$conn oci_connect('hr''welcome''localhost/XE');
if (!
$conn) {
    
$e oci_error();
    
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

$stid oci_parse($conn'SELECT * FROM mytab');

// The defines MUST be done before executing
oci_define_by_name($stid'ID'$id);

$fruit oci_new_descriptor($connOCI_D_LOB);
oci_define_by_name($stid'FRUIT'$fruitOCI_D_CLOB);

oci_execute($stid);

while (
oci_fetch($stid)) {
    echo 
$id " is " $fruit->load(100) . "<br>\n";
}

// Displays:
//   1 is apple
//   2 is orange

$fruit->free();
oci_free_statement($stid);
oci_close($conn);

?>

Notes

Note:

In PHP versions before 5.0.0 use ocidefinebyname() instead. The old function name can still be used in current versions, however it is deprecated and not recommended.

See Also



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 249 / 159282356. Delta: 0.05017 с