I am okay with beginning code samples separating variable and reference, but then i get lost especially with last code sample 'cloning' Which part of the code 'cloning is variable and which is reference? Is $x reference and $y variable?
From 'Variable Un-Assignment' going down I do not understand difference variable and reference
Which code samples are variable and which are reference?
Developers of all skill levels should learn to use current best practices when developing websites. However many developers, new and old, fall into the trap of using deprecated features because this is what so many tutorials and books tell them to u…
Many old projects have bad code, but the budget doesn't exist to rewrite the codebase. You can update this code to be safer by introducing contemporary input validation, sanitation, and safer database queries.
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions.
Consider email address RFCs:
Look at HTML5 form input element (with type=email) regex pattern: