11-06-2007
Mysql CHAR vs VARCHAR
Looking for any advise from a DBA/DA. When should you use CHAR and when should you use VARCHAR when designing a table. From my readings seems like VARCHAR will accept any length string even though you define a length to it, so I setup gadget VARCHAR(10) I could actually put something with 20 characters in there. Thanks for any advise on this. Bill
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LEARN ABOUT PHP
oci_bind_array_by_name
OCI_BIND_ARRAY_BY_NAME(3) OCI_BIND_ARRAY_BY_NAME(3)
oci_bind_array_by_name - Binds a PHP array to an Oracle PL/SQL array parameter
SYNOPSIS
bool oci_bind_array_by_name (resource $statement, string $name, array &$var_array, int $max_table_length, [int $max_item_length = -1],
[int $type = SQLT_AFC])
DESCRIPTION
Binds the PHP array $var_array to the Oracle placeholder $name, which points to an Oracle PL/SQL array. Whether it will be used for input
or output will be determined at run-time.
PARAMETERS
o $statement
- A valid OCI statement identifier.
o $name
- The Oracle placeholder.
o $var_array
- An array.
o $max_table_length
- Sets the maximum length both for incoming and result arrays.
o $max_item_length
- Sets maximum length for array items. If not specified or equals to -1, oci_bind_array_by_name(3) will find the longest element
in the incoming array and will use it as the maximum length.
o $type
- Should be used to set the type of PL/SQL array items. See list of available types below:
o SQLT_NUM - for arrays of NUMBER.
o SQLT_INT - for arrays of INTEGER (Note: INTEGER it is actually a synonym for NUMBER(38), but SQLT_NUM type won't work in
this case even though they are synonyms).
o SQLT_FLT - for arrays of FLOAT.
o SQLT_AFC - for arrays of CHAR.
o SQLT_CHR - for arrays of VARCHAR2.
o SQLT_VCS - for arrays of VARCHAR.
o SQLT_AVC - for arrays of CHARZ.
o SQLT_STR - for arrays of STRING.
o SQLT_LVC - for arrays of LONG VARCHAR.
o SQLT_ODT - for arrays of DATE.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
oci_bind_array_by_name(3) example
<?php
$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
$m = oci_error();
trigger_error(htmlentities($m['message']), E_USER_ERROR);
}
$create = "CREATE TABLE bind_example(name VARCHAR(20))";
$stid = oci_parse($conn, $create);
oci_execute($stid);
$create_pkg = "
CREATE OR REPLACE PACKAGE ARRAYBINDPKG1 AS
TYPE ARRTYPE IS TABLE OF VARCHAR(20) INDEX BY BINARY_INTEGER;
PROCEDURE iobind(c1 IN OUT ARRTYPE);
END ARRAYBINDPKG1;";
$stid = oci_parse($conn, $create_pkg);
oci_execute($stid);
$create_pkg_body = "
CREATE OR REPLACE PACKAGE BODY ARRAYBINDPKG1 AS
CURSOR CUR IS SELECT name FROM bind_example;
PROCEDURE iobind(c1 IN OUT ARRTYPE) IS
BEGIN
-- Bulk Insert
FORALL i IN INDICES OF c1
INSERT INTO bind_example VALUES (c1(i));
-- Fetch and reverse
IF NOT CUR%ISOPEN THEN
OPEN CUR;
END IF;
FOR i IN REVERSE 1..5 LOOP
FETCH CUR INTO c1(i);
IF CUR%NOTFOUND THEN
CLOSE CUR;
EXIT;
END IF;
END LOOP;
END iobind;
END ARRAYBINDPKG1;";
$stid = oci_parse($conn, $create_pkg_body);
oci_execute($stid);
$stid = oci_parse($conn, "BEGIN arraybindpkg1.iobind(:c1); END;");
$array = array("one", "two", "three", "four", "five");
oci_bind_array_by_name($stid, ":c1", $array, 5, -1, SQLT_CHR);
oci_execute($stid);
var_dump($array);
?>
PHP Documentation Group OCI_BIND_ARRAY_BY_NAME(3)