11/27/2023 0 Comments O reilly programming php![]() run PHP on Windows, which lets you control other Windows applications such as Word and Excel with COM, or interact with databases using ODBC This book is a guide to the PHP language When you finish this book, you will know how the PHP language works, how to use the many powerful extensions that come standard with PHP, and how to design and build your own PHP web applications Audience for This Book PHP. is_null($newname)) Floating-Point Numbers Floating-point numbers (often referred to. 1 but PHP also recognizes numbers in scientific notation: 0.314E1 17.0E-3 // 0.314*101, or 3.14 // 17.0*1 0-3, or 0.017 Floating-point values are only approximate representations of numbers For example, on. ![]() All rights reserved ,ch02.15294 Wednesday, Ma11:42 AM PHP recognizes floating-point numbers written in two different formats There’s the one we all use every day: 3.14 0.017 -7. whirlwind tour of the core PHP language, covering such basic topics as data types, variables, operators, and flow control statements PHP is strongly influenced by other programming languages, such as Perl and C, so if you’ve had experience with those languages, PHP should be easy to pick up If PHP is one of your first programming languages, don’t panic We start with the basic units of a PHP program and build. ![]() ![]() You’ll learn best-practices programming techniques here that will help you avoid mistakes that can lead to disaster Chapter 13, Application Techniques, talks about the advanced techniques that most PHP programmers eventually want to use, including error handling and performance tuning Chapter 14, Extending PHP, is an advanced chapter that presents easy-to-follow instructions for building a PHP extension. $big_long_variable_name = "PHP" $short =& $big_long_variable_name $big_long_variable_name = " rocks!" print "\$short is $short\n" print "Long is $big_long_variable_name\n" $short is PHP rocks! Long is PHP rocks! $short = "Programming $short" print "\$short is $short\n" print "Long is $big_long_variable_name\n" $short is Programming PHProcks! Long is Programming PHProcks! After the assignment. ![]()
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