By Toby Butzon

Show description

Read or Download PHP by example PDF

Similar structured design books

Data Structures and Algorithm Analysis in Java, Third Edition

With its concentrate on developing effective information constructions and algorithms, this finished textual content is helping readers know the way to choose or layout the instruments that may top resolve particular difficulties. It makes use of Java because the programming language and is appropriate for second-year info constitution classes and desktop technological know-how classes in set of rules research.

Modeling in Applied Sciences: A Kinetic Theory Approach

Modeling complicated organic, chemical, and actual platforms, within the context of spatially heterogeneous mediums, is a tough job for scientists and engineers utilizing conventional tools of research. Modeling in technologies is a finished survey of modeling huge platforms utilizing kinetic equations, and specifically the Boltzmann equation and its generalizations.

Principles of Digital Image Synthesis

Photo synthesis, or rendering, is a box of transformation: it changesgeometry and physics into significant pictures. as the so much popularalgorithms often switch, it's more and more very important for researchersand implementors to have a easy knowing of the rules of imagesynthesis. targeting idea, Andrew Glassner offers a comprehensiveexplanation of the 3 center fields of research that come jointly to formdigital photograph synthesis: the human visible procedure, electronic signalprocessing, and the interplay of topic and light-weight.

Bionic Optimization in Structural Design: Stochastically Based Methods to Improve the Performance of Parts and Assemblies

The booklet offers feedback on the right way to commence utilizing bionic optimization equipment, together with pseudo-code examples of every of the $64000 ways and descriptions of the way to enhance them. the best equipment for accelerating the reviews are mentioned. those comprise the choice of dimension and generations of a study’s parameters, amendment of those riding parameters, switching to gradient equipment while forthcoming neighborhood maxima, and using parallel operating undefined.

Additional resources for PHP by example

Sample text

If the extension is one that you’ve already tried, explain to the administrators that the extension isn’t working and see if they can help you find out why. net/manual/). If you still have trouble, you may find help on the PHP installation mailing list. net including information about your server such as operating system, Web server, and the version of PHP you’re trying to install. The list members will be happy to help. THE PHP CODE DOESN’T APPEAR TO HAVE EXECUTED If this is the case, you will see only the parts of the page that were outside of the PHP tags.

Floating-Point Numbers A floating-point number (commonly referred to simply as a float or double, which, in PHP, are exactly the same thing) is a numeric value with a decimal point. 99 The second example is a float represented in scientific notation. The e, as is often the case on graphing calculators, means “times 10 to the”. It is followed by whatever power 10 should be raised to in order to put the decimal wherever you want it. 5. Floats also have limitations—floats are accurate enough for general-purpose use, but if you need to store a number with an extremely long decimal value, you will need to look into the arbitrary precision math functions (BCMath or GMP) on the PHP Web site.

Thus, the first line of output shows the string just as it appears in the code. However, the second assignment uses a double-quoted string, so the string is interpreted before it is stored in the variable. Thus, $myVariable is expanded using its current value (that of the first assignment), and then the new value is stored in the variable, yielding the string found on the second line of output. CHARACTER ESCAPING Some characters, such as the dollar sign, have special meaning within strings. In addition, sometimes you need to include quotes within your strings, which would typically signal the end of the string.

Download PDF sample

Rated 4.56 of 5 – based on 45 votes