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Introduction to PHP for Scientists and Engineers: Beyond by David R. Brooks

By David R. Brooks

PHP, initially created in 1994 as a ‘Personal domestic web page’ software, is a server-side programming language that may be used to resolve various computing difficulties client-side language like JavaScript cannot.

This hugely invaluable text/reference offers key details had to write your individual on-line technology and engineering functions, together with analyzing, growing and manipulating facts documents kept as textual content on a server, thereby overcoming the constraints of a client-side language. This publication makes a speciality of these parts of the language - akin to dossier input/output, arrays, integrated math services, and user-created capabilities - which are crucial for fixing quite a lot of scientific/engineering computing difficulties. It assumes a operating wisdom of HTML, programming innovations, and JavaScript, C or an analogous language.

Features:

• bargains a operating wisdom of personal home page, crucial for server-side programming

• comprises distinct code examples to lead the reader

• includes numerous entire purposes that convey the best way to make the most of server-side programming capabilities

• super obtainable, and perfect for self-study

• presents an author-supported supplementary site containing code examples (www.pages.drexel.edu/~brooksdr/DRB_web_page/BookCode/PHPBookCode.htm)

• at once addresses the desires of engineers, scientists and dealing execs by way of explaining accurately these elements of personal home page required

This concise applications-oriented textual content is a phenomenal shortcut to studying the necessities of Hypertext Preprocessor and is perfect for self-study or path use.

Dr. Brooks has authored a number of winning Springer titles, together with: Problem fixing with Fortran ninety for Scientists and Engineers; C Programming: The necessities for Engineers and Scientists; and An creation to HTML and JavaScript for Scientists and Engineers.

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Extra info for Introduction to PHP for Scientists and Engineers: Beyond JavaScript

Example text

Missing data are represented by a value of –1. Write a PHP script that will read this file and count the number of missing values for each month. 3 More about PHP File Input/Output 41 output the number of each month (1–12) the year, and the number of missing values for that month. Write the results into a file and save it. The calculations required for this problem are simple, but reading the data file correctly requires some care. 5 shows the code for solving this problem. 5. feof($in)) { // Read one month, year, # of days.

Is used for block (multiline) comments. Single-line or in-line comments can begin with either // or #. PHP supports functions, similar in syntax to JavaScript functions. R. 1007/978-1-84800-237-1_2, © Springer-Verlag London Limited 2008 24 2 Working with PHP as inputs. value property, or for the parseFloat() or parseInt() functions needed to transform form field strings into their corresponding numerical values in calculations or when strings are passed as function arguments. When JavaScript functions need to return multiple values, one or more forms are passed as input, and outputs are sent to fields in those forms.

It is often the case that code to read data from a data file should not assume ahead of time how many values are in the file. Thus, a conditional loop is most often the appropriate approach. 5, calls to the fclose() function, used in earlier code testing, are commented out because they will not be executed. Execution of the exit construct will close all open files. feof($in)) { // Read one month, year, # of days.
"; fclose($in); fclose($out); Executing a break exits the loop and code execution continues starting with the first statement after the loop.

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