Download Essential PHP Tools: Modules, Extensions, and Accelerators by David Sklar PDF

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By David Sklar

This publication is a vital consultant to a few of the easiest unfastened components to Hypertext Preprocessor. those components, or instruments, offer worthy performance for making improvements to your Hypertext Preprocessor internet purposes, together with getting access to databases, producing strong internet types, utilizing web page templating structures, developing and parsing XML records, authenticating clients, and masses more.

In reaction to the present scarcity of documentation in regards to the instruments, writer David Sklar packs this e-book with information about fitting, configuring, and utilizing each one tool—along with lots of examples adapted to Hypertext Preprocessor four and five.

Sklar additionally lays out the main points of Auth and HTML_QuickFormtwo difficult operating PEAR modules, so that you wouldn't have to code your personal authentication method or internet shape development set! additionally integrated are chapters on debugging courses, and lengthening net server velocity. briefly, you'll discover ways to put off inefficiencies in personal home page, and increase functionality with none code modification.

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In this mode, ADODB creates a PEAR_Error object when Connect(), PConnect(), or a query execution function fails. You can use the PEAR_Error objects in two ways. php'; II ... establish a connection to the database $rs = $conn->execute('SELECT flavor,calories,price FROM cookies'); if (! $err->getMessage()); } Just like you can take action automatically on errors generated by trigger_error() if you set your own error handler, you can take action automatically when PEAR errors occur by using the PEAR: : setErrorHandling() method.

The second way is to use ADODB's trigger_error() error-handling mode. In this mode, ADODB throws an error with PHP's trigger_error() function whenever Connect (), PConnect (), or a query execution function such as Execute () fails. You don't have to do anything special to check return values because your program exits when there is an error. To turn on this error handling mode, require the file adodb/adodb-errorhandler. inc. php. php'; II ... php on line 75 BecauseADODB uses trigger_error() to throw these errors, you can catch them by defining your own error handler.

Pager= new ADODB_Pager($conn,"SELECT id,flavor,calories,price FROM• ice_cream_big"); $pager->Render(); Figure 2-3. ADODB _Pager displays a record set with pagination links. The data is displayed in a table with formatting and navigation links. The leftmost link in the table goes to the first page, the second link goes to the previous page, the third link goes to the next page, and the rightmost link goes to the last page of data. The links contain a variable that controls what page is displayed, but they don't automatically include other GET or POST variables that may have been set.

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