php Programming Glossary: expr

How to evaluate formula passed as string in PHP?

http://stackoverflow.com/questions/1015242/how-to-evaluate-formula-passed-as-string-in-php

This class can be used to safely evaluate mathematical expressions. The class can take an expression in a text string and.. evaluate mathematical expressions. The class can take an expression in a text string and evaluate it by replacing values of.. functions and nested functions. It can be used to evaluate expressions from untrusted sources. It provides robust error checking..

How can I convert ereg expressions to preg in PHP?

http://stackoverflow.com/questions/6270004/how-can-i-convert-ereg-expressions-to-preg-in-php

can I convert ereg expressions to preg in PHP Since POSIX regular expressions ereg.. ereg expressions to preg in PHP Since POSIX regular expressions ereg are deprecated since PHP 5.3.0 I'd like to know.. PHP 5.3.0 I'd like to know an easy way to convert the old expressions to PCRE Perl Compatible Regular Expressions preg . Per..