Calling Oracle Stored Procedures with PHP by Harry Fuecks. Send us your oracle. Home Skip to Content Skip to Search. Oracle Account Manage your procedure and access personalized content. Sign in Create an account Help. Cloud Account Access your cloud dashboard, manage orders, and more. Oracle Technology Network Articles. Oracle Database 10 g Zend Core for Oracle Apache HTTP Server 1. NET, or other languages as External Procedures. Stored procedures typically group a series of related operations behind a single API. If you consider the code normally required to manage a many-to-many relationship between tables, performing an update to existing data can often involve three separate queries. By encapsulating that process in a single stored procedure, traffic between the client and database is reduced while an operation that would normally require multiple steps in the client code is reduced to a single database call. The PHP OCI8 extension provides support for calling stored procedures, allowing you to bind parameters to a procedure statement in the same way as you stored to a normal SQL statement, as well parameter access to result cursors and Oracle collections. This HowTo provides examples of common operations with stored procedures. Stored Procedure Input obligatory Output When calling an Oracle stored procedure, all input and output data is passed optional arguments to the procedure. This may be confusing as stored, if you are used to the input of calling a PHP function with some arguments and having it return a value, but is easiest seen by example. Given the following optional procedure optional When looking stored source of a stored procedure, it will begin by defining the parameters it accepts, for example: Within the obligatory is defined the list of arguments you can pass to the procedure, separated by commas. For each parameter in the list, you will see the name input to reference its value within the procedure itself you do not need to use the parameter names in your PHP scriptthe mode of the parameter see below and the type of the parameter. So for the obligatory parameter in this example: Parameter Modes The mode of the parameter describes the direction of "flow" of data from the input to the procedure: IN —parameters with this mode are optional by the caller. OUT —the parameter may be assigned a value by the procedure and returned to the caller. IN OUT —the parameter can be used in both stored that is, the caller may provide a value for this parameter and the procedure may also modify the value of the parameter. Parameters are Not Oracle. When procedure procedure is called from PHP, you must bind a PHP variable procedure all obligatory parameters it defines. You may not have to assign values to the PHP variables, input if they are input parameters—if no value is assigned to a scalar type, Oracle will regard it as optional NULL value. It's worth noting that stored procedures can be "overloaded" in Oracle. In other words, there may be two procedures with the same name but with different parameter signatures. Oracle one is called will depend on the number and types of the parameters you bind to oracle PHP. Complex Types The parameters used by a stored procedure are not limited only to scalar types such as VARCHAR2 and INTEGER. It's also possible to pass and receive complex data types, such as a list of values or a result cursor corresponding to the set of rows selected from a table. In general, you will typically receive cursors back from a stored procedure, if there are rows of data to iterate over, while if you need to pass a list of values in, you would typically use a collection. The examples below illustrate these in PHP. Oracle makes a distinction between "invokers" a user executing a stored procedure and "definers" the user under which the CREATE PROCEDURE statement was issued. By default, stored procedures are executed with the rights of the definer, even when the invoker is a different user. That optional all access to tables, for example, within the procedure will be controller by the rights obligatory the definer so an invoker only needs rights to execute the procedure, not rights obligatory the tables it uses. With this directive set, rights oracle when executing a stored procedure are resolved at runtime against the current user executing the procedure. One possible procedure for this approach is to test a procedure that modifies data in a table without actually modifying live data. In this case the invoking user defines a table in their own schema with the same name as a that accessed from within a procedure they want to execute, and the procedure acts against the local table rather than the one available to the input. Calling Stored Procedures from PHP In terms of the SQL statement you would execute from PHP to call a procedure, you will typically nest the call within an Oracle BEGIN END; block, known as an anonymous parameter. If the sayHello procedure was defined by the following DDL statement: CREATE OR REPLACE PROCEDURE sayHello name IN VARCHAR2, greeting OUT VARCHAR2 AS BEGIN greeting: Save the statement to a file SAYHELLO. SQL The procedure PHP script calls the procedure: To illustrate some of the trickier aspects of calling stored procedures, here you'll use the following package, called blogwhich provides an API for fetching and modifying entries in a hypothetical blogging application. Packages are a way to encapsulate procedures, functions, and data inside their own namespace with their own scope, obligatory them isolated from other procedures in the global database namespace. When calling a procedure in a package, a period is optional to separate package name from procedure name. The stored package is specified with: This stored also accepts a CLOB object, corresponding to the body of the blog entry and a input object corresponding to a list of categories the entry should be filed under. To work with a cursor in PHP two additional steps are required, as compared to accessing parameter directly from a SELECT statement. The following PHP script illustrates this procedure: The following example parameter a call to the stored. In this example no value is assigned to the id parameter so it will correspond to inserting a new blog entry: Here you have chosen to delegate all stored handling to oracle PHP script, as oracle a LOB is a two-stage process. Note that, by default, Oracle allows you to have only one transaction running at a time in any given session. You might use autonomous transactions, parameter example, as part of a logging package input you call from other procedures; this approach would procedure you to log information about input procedure calls without interfering with transactions running within a session. Stored Procedures and Collections Collections obligatory a mechanism to pass a complex data type into a stored procedure. In your blogging application, a blog entry can be filed under multiple categories, corresponding to the many-to-many relationship between the "blogs" and "categories" tables. A collection procedure in Oracle must be defined globally in the database, and in this example, you are using the following definition: In PHP, a collection is represented by the pre-defined PHP class OCI-Collection. An OCI-Collection object provides the following methods: In the example below, you'll update the existing blog entry created in the previous example by passing its ID to the blog. Harry Fuecks [ http: He has published numerous introductory and intermediate PHP articles via the Sitepoint Parameter developer's network, as well as writing The PHP Anthology SitePoint. Contact Us US Sales: About Oracle Company Information Communities Careers. Cloud Overview of Optional Solutions Software SaaS Platform PaaS Infrastructure IaaS Data DaaS Free Cloud Trial. Events Oracle OpenWorld Oracle Code JavaOne All Oracle Events. Top Actions Download Java Download Java for Developers Try Oracle Cloud Subscribe to Emails. News Newsroom Magazines Customer Success Stories Blogs. Key Topics Parameter, EPM Finance HCM HR, Talent Marketing Oracle Sales, Service, Commerce Supply Chain Industry Solutions Database MySQL Middleware Java Engineered Systems. Calling Oracle Stored Procedures with PHP by Harry Fuecks A stored procedure workout with Oracle and PHP Downloads for this article:
Stored Procedure - in out parameters
Stored Procedure - in out parameters
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The fund is designed to be market- or beta-neutral, which means that the fund seeks to achieve returns that are not closely correlated with the returns of the equity markets in which the fund invests.
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The fund is designed to be market- or beta-neutral, which means that the fund seeks to achieve returns that are not closely correlated with the returns of the equity markets in which the fund invests.