PHP Interview Questions and answers» Regex archives – interview questions and answers http://www.phpinterviewquestions.com Prepare for your next php based interview with high confidence Mon, 26 Sep 2011 08:37:10 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Strings and regular expressions http://www.phpinterviewquestions.com/php-interview-questions/strings-and-regular-expressions-php-interview-questions/ http://www.phpinterviewquestions.com/php-interview-questions/strings-and-regular-expressions-php-interview-questions/#comments Fri, 18 Jun 2010 12:08:03 +0000 Bart http://www.phpinterviewquestions.com/?p=284 What will be the answer of the following code snippet?

echo 'Testing ' . 1 + 2 . '45';

Simply you will give the answer as : Testing 345

But the answer is : 245

That is because you can not sum a number with a string. The first part, before the plus mark is a string though there is 1 there.
So engine will simply get it as 0 and the latter part as 245. so answer will be 245.

]]> http://www.phpinterviewquestions.com/php-interview-questions/strings-and-regular-expressions-php-interview-questions/feed/ 0 Regular expressions http://www.phpinterviewquestions.com/php-interview-questions/expert-level-php-interview-questions/regular-expressions/ http://www.phpinterviewquestions.com/php-interview-questions/expert-level-php-interview-questions/regular-expressions/#comments Tue, 23 Feb 2010 05:19:03 +0000 Bart http://www.phpinterviewquestions.com/wordpress/?p=22 How can we extract string ‘phpinterviewquestions‘ from a string ‘http://phpinterviewquestions.com’ using regular expression of PHP?

preg_match(‘/http://([wW]+?).com/i’,'http://phpinterviewquestions.com’,$out);
echo $out[1];

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