Core PHP Programming by Leon Atkinson

By Leon Atkinson

Middle personal home page Programming, 3rd variation is the authoritative advisor to the hot Hypertext Preprocessor five for skilled builders. most sensible personal home page developer Leon Atkinson and personal home page five contributor/Zend Engine 2 co-creator Zeev Suraski disguise each part of real-world personal home page five improvement, from easy syntax to complex item - orientated development-even layout patterns!It's all right here: networking, information constructions, average expressions, math, configuration, photos, MySQL/PostgreSQL help, XML, algorithms, debugging, optimization...and 650 downloadable code examples, with a Foreword by way of personal home page five contributor and Zend Engine 2 co-creator Andi Gutmans!

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If you have experience with BASIC, you might wonder if PHP's switch statement allows cases to contain ranges. It doesn't. It's probably best to code this situation with an if-elseif-else statement. php /* ** Get today's weekday name */ $englishDay = date("l"); /* ** Find the today's German name */ switch($englishDay) { case "Monday": $deutschDay = "Montag"; break; case "Tuesday": $deutschDay = "Dienstag"; break; case "Wednesday": $deutschDay = "Mittwoch"; break; case "Thursday": $deutschDay = "Donnerstag"; break; case "Friday": $deutschDay = "Freitag"; break; case "Saturday": $deutschDay = "Samstag"; break; default: // It must be Sunday $deutschDay = "Sonntag"; } /* ** Print today's English and German names */ print("

German Lesson: Day of the Week

\n" .

This even works with arrays and objects. 4 is an example of this technique. Notice that the name variable appears within a print statement between double quotes. \n"); //Greet Zeev again print <<< EOD Hello again, $name! How is it going? > Freeing Memory PHP applications, like any kind of computer applications, consume memory. PHP uses some memory for internal purposes. Some memory stores the data that you work with in your application, mostly in variables. Typically, PHP applications consume small amounts of memory, so you don't have to worry about conserving memory.

Conversion Performed An integer stating the number of elements in the array most of the time. Do not rely on this functionality. Arrays with one or more elements are converted to TRUE. Empty arrays are converted to FALSE. This conversion is rarely used. The string literal "Array". 41 42 Part I: Programming with PHP Arithmetic Operators Addition, subtraction, multiplication, and division are familiar concepts. They may be applied to any numeric value, including integers and floating-point numbers.

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