{"id":10729,"date":"2014-11-22T05:04:26","date_gmt":"2014-11-21T18:04:26","guid":{"rendered":"http:\/\/www.rjmprogramming.com.au\/wordpress\/?p=10729"},"modified":"2014-11-22T05:04:26","modified_gmt":"2014-11-21T18:04:26","slug":"php-nested-elements-report-primer-tutorial","status":"publish","type":"post","link":"https:\/\/www.rjmprogramming.com.au\/ITblog\/php-nested-elements-report-primer-tutorial\/","title":{"rendered":"PHP Nested Elements Report Primer Tutorial"},"content":{"rendered":"
\"PHP<\/a>

PHP Nested Elements Report Primer Tutorial<\/p><\/div>\n

Lots of data is hierarchical by nature. Examples are HTML or XML or JSON data, and to get a report on tag types nested within other tag types can be a useful tool to sanity check that your data is well structured, or is valid, perhaps.<\/p>\n

Because our input is a data file today (ie. implicitly, a URL amounts to a data file, somewhere, on a web server), we will need a server side language to work the functionality, though I daresay, Ajax<\/a> techniques may be okay to use too, because we are not writing files, as such, here, today, but just reporting on files … subtle difference, but important, because Ajax techniques can read file data, but cannot write to files … the writing to files (on the web server<\/a>) is where PHP (or ASP.Net) or other server side languages really need to be used.<\/p>\n

With XML data in particular, data element attributes<\/i> are often used as a place to contain important business logic that affects the structure of your data, so, here, with our PHP, we allow a simple arrangement, where if you can specify a unique attribute<\/i> search string, then you can narrow down the parent tag scope of interest, to those only containing this attribute<\/i> search string … and I guess you could kludge<\/i> this for HTML data, perhaps with a unique classname<\/i> or id<\/i> or style= property<\/i> perhaps.<\/p>\n

You are welcome trying it here with a live run<\/a>.<\/p>\n

Here is a tailored call of the PHP that matches what is on today’s tutorial’s picture as a live run<\/a> you can try to search the Google search engine landing webpage’s input<\/i> tags nested within form<\/i> tags, as an example of things you can try … hope it can be of interest, or help.<\/p>\n

You can download PHP programming source code and rename to tags_within.php<\/a> here.<\/p>\n

If this was interesting you may be interested in this<\/a> too.<\/p>\n