Creating Magic Methods in PHP


	Creating Magic Methods in PHP

prostoalex

8-14-2007 12:43 AM

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tags:

php, programming

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/04740407-845d-4cc7-9bc4-f4c6b375c39f/384747FA-D6B3-4AC7-8329-371DE99CE918/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.chriscassell.net/log/2007/08/09/creating_magic_.html" href="http://www.chriscassell.net/log/2007/08/09/creating_magic_.html" style="font-size: 11px;">www.chriscassell.net</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.chriscassell.net/log/2007/08/09/creating_magic_.html"><P>I’ve learned a lot of things from various open source frameworks, especially <A href="http://cakephp.org/">CakePHP</A>. One of the most impressive things about Cake, and Ruby on Rails for that matter, is its magic methods in its data model class, <CODE>findBy</CODE> and <CODE>findAllBy</CODE> which allow you to query the database by calling a non-existent method like <CODE>findAllByColor ('blue')</CODE>. I’ve implemented similar methods in the home-grown framework that I use at work. Here’s how to do it.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.chriscassell.net/log/2007/08/09/creating_magic_.html"><P>Through its <A href="http://en.wikipedia.org/wiki/Method_overloading">overloading</A> mechanism, PHP allows you to catch calls to methods that don’t exist. You do need to be using classes and generally good object-oriented techniques in order to do this, but you know that, right?</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.chriscassell.net/log/2007/08/09/creating_magic_.html"><P>Here’s the catch: overloading is native to PHP5, but needs some coersion in PHP4.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/384747FA-D6B3-4AC7-8329-371DE99CE918/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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