Science Library - free educational site

Science Library Quiz

Sorry, there is no quiz for this topic. Please try instead this quiz for:

Functions (PHP)

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: Which function returns the number of characters in a string?

Question 2: $name = str_replace('Peter', 'Arthur', $name); echo 'Hello'. $name; What would be the output of this line?

Question 3: What is the instruction for converting a string with mixed upper and lower to all lower case letters?

Quizzes available from the SEO topic

Select a topic for more Computing quizzes:

Select a subject for more quizzes

Latest Item on Science Library

The most recent article is:


View this item in the topic:

Vectors and Trigonometry

and many more articles in the subject:

Subject of the Week


Information Technology, Computer Science, website design, database management, robotics, new technology, internet and much more. JavaScript, PHP, HTML, CSS, Python, ... Have fun while learning to make your own websites with

Computer Science

Test your knowledge!

Question: The electric field lines between two plates of like charge are ...

Go to the article about: Electric fields


Quote of the day...

The Facebook filter bubble is not a technical but an anthropological problem.

ZumGuy Internet Promotions

Vitruvian Boy