|
|
Understanding perl code
|
|
OCI_DEFINE_BY_NAME(3) OCI_DEFINE_BY_NAME(3) oci_define_by_name - Associates a PHP variable with a column for query fetches SYNOPSIS
bool oci_define_by_name (resource $statement, string $column_name, mixed &$variable, [int $type = SQLT_CHR]) DESCRIPTION
Associates a PHP variable with a column for query fetches using oci_fetch(3). The oci_define_by_name(3) call must occur before executing oci_execute(3). PARAMETERS
o $statement -A valid OCI8 statement identifier created by oci_parse(3) and executed by oci_execute(3), or a REF CURSOR statement identifier. o $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. o $variable - The PHP variable that will contain the returned column value. o $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(3) to allo- cate LOB/ROWID/BFILE descriptors. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 oci_define_by_name(3) 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 $city<br> "; } // Displays: // Location id 1000 is Roma // Location id 1100 is Venice oci_free_statement($stid); oci_close($conn); ?> Example #2 oci_define_by_name(3) 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 $mydesc<br> "; } // Displays: // id 1 is Iced Coffee oci_free_statement($stid); oci_close($conn); ?> Example #3 oci_define_by_name(3) 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> "; } // Displays: // 1 is apple // 2 is orange $fruit->free(); oci_free_statement($stid); oci_close($conn); ?> Example #4 oci_define_by_name(3) 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); $fruit = oci_new_descriptor($conn, OCI_D_LOB); oci_define_by_name($stid, 'FRUIT', $fruit, OCI_D_CLOB); oci_execute($stid); while (oci_fetch($stid)) { echo $id . " is " . $fruit->load(100) . "<br> "; } // Displays: // 1 is apple // 2 is orange $fruit->free(); oci_free_statement($stid); oci_close($conn); ?> SEE ALSO
oci_fetch(3), oci_new_descriptor(3). PHP Documentation Group OCI_DEFINE_BY_NAME(3)
