... quyển sách này. Bạn sẽ phải vượt Lap trinhWeb dong voiPHP / MySQL Page 18chi tiết rằng tại sao PHPvàMySQL là trung tâm của môi trường phát triển ứng dụng Web. Trước khi tiếp tục, tôi nghó ... những gì. PHP Webserver Lap trinhWeb dong voiPHP / MySQL Page 9Tóm tắt Trong chương này bạn đã tìm hiểu tất cả các lệnh cần thiết để tạo và thao tác với CSDL trong môi trường MySQL. Bạn ... Ngoài HTML ra các trình duyệt Web còn cho phép các add-in hỗ trợ nhiều thứ khác như RealPlayer, Flash, Shockwave, hoặc hỗ trợ về Javascript Lap trinhWeb dong voiPHP / MySQL Page 2là tháng:$thang...
... thấy các CD thiết kế webPHP tại các cửa hàng CD (Tôn Thất Tùng, tp.HCM chẳng hạn). Trên CD có trình cài đặt Apache, PHP, MySQL thông dụng là FOX. Ngoài ra còn có các Website PHP mẫu. CÁC LỆNH ... < ?php include(“dbconnect .php ); ?> <h2>View My Guest Book!!</h2> < ?php $result = mysql_ query(“select * from guestbook”) or die (mysql_ error()); while ($row = mysql_ fetch_array($result)) ... dấu nhắc lệnh: mysql& gt; use guestbook Database changed mysql& gt; create table guestbook -> ( -> name varchar(40) null, -> location varchar(40) null, -> email varchar(40) null,...
... Object-Oriented PHP 147PART II Using MySQL 7 Designing Your Web Database 1718 Creating Your Web Database 1839 Working with Your MySQL Database 20710 Accessing Your MySQL Database from the Web with PHP ... 21Identifiers 21User-Declared Variables 22Assigning Values to Variables 22Variable Types 22 PHP s Data Types 22Type Strength 23Type Casting 23Variable Variables 23Constants 24Variable Scope 25Operators ... Control in PHP 42921 Other Useful Features 44700 7842 FM 3/6/01 3:38 PM Page iii PHP AND MYSQLWEB DEVELOPMENTviAccessing Form Variables 19Form Variables 19String Concatenation 20Variables...
... 3:38 PM Page xviii PHP AND MYSQLWEB DEVELOPMENTDropping a Whole Database 226Further Reading 226Next 22610 Accessing Your MySQL Database from the Web with PHP 227How Web Database Architectures ... V Building Practical PHP and MySQL Projects 45722 Using PHP and MySQL for Large Projects 459Applying Software Engineering to Web Development 460Planning and Running a Web Application Project ... Time from PHP 392Using the date() Function 392Dealing with UNIX Time Stamps 394Using the getdate() Function 395Validating Dates 396xv00 7842 FM 3/6/01 3:38 PM Page xv PHP AND MYSQLWEB DEVELOPMENTConverting...
... PM Page xxiv PHP AND MYSQLWEB DEVELOPMENTProblems with Headers 777Extending the Project 778Further Reading 778PART VI Appendixes 779A Installing PHP 4 and MySQL 781Running PHP as a CGI ... 782Installing Apache, PHP, and MySQL Under UNIX 783Apache and mod_SSL 787httpd.conf File—Snippets 790Is SSL Working? 792Installing Apache, PHP, and MySQL Under Windows 793Installing MySQL Under Windows ... xxviINTRODUCTIONThe home page for PHP is available at http://www .php. netThe home page for Zend is at http://www.zend.comWhat’s New In PHP Version 4?If you have used PHP before, you will notice a...
... “Using MySQL, ” discusses the concepts and design involved in using relational databasesystems such as MySQL, using SQL, connecting your MySQL database to the world with PHP, and advanced MySQL ... variables• Identifiers• User declared variables• Variable types• Assigning values to variables• Constants• Variable scope• Operators and precedence• Expressions• Variable functions• Making decisions ... Your life as a PHP programmer will be easier if these names reflectthe data that is typed into the field.Using PHP PART I1203 7842 CH01 3/6/01 3:39 PM Page 12 PHP AND MYSQLWEB DEVELOPMENTEase...
... “.$totalqty.”<br>\n”;echo “Subtotal: $”.$totalamount.”<br>\n”;$taxrate = 0.10; // local sales tax is 10%$totalamount = $totalamount * (1 + $taxrate);$totalamount = number_format($totalamount, 2);echo “Total ... run the phpinfo() command:phpinfo();This will provide a list of PHP s predefined variables and constants, among other useful infor-mation. We will discuss some of these as we go along.Variable ... non-zero values evalu-ate to true and zero values to false. Say that you have initialized two variables as follows:$a = 5;$b = 7;If you then test $a = $b, the result will be true. Why? The value...
... form.Reinterpreting VariablesYou can achieve the equivalent of casting a variable by calling a function. The three functionsthat can be useful for this areint intval(mixed var);double doubleval(mixed var);string ... $taxrate to be evaluated first. PHP Crash CourseCHAPTER 11 PHP CRASHCOURSE35TABLE 1.6 ContinuedAssociativity Operators03 7842 CH01 3/6/01 3:39 PM Page 35Testing Variable Status PHP has several ... innermost set ofparentheses will be evaluated first.Variable FunctionsBefore we leave the world of variables and operators, we’ll take a look at PHP s variable func-tions. These are a library...
... theinclude_path (set in your PHP configuration—see Appendix A, “Installing PHP 4 and MySQL ) for a file. If you want to do this, set this parameter to 1. If you tell PHP to search theinclude_path, ... a variable we canaccess as $address when we process the form in PHP, assuming that we are using the shortstyle for form variables. Remember that the alternative would be either$HTTP_GET_VARS[“address”] ... file is in the orders directory. We’ve usedthe PHP built-in variable $DOCUMENT_ROOT. This variable points at the base of the documenttree on your Web server. We’ve used the “ ” to mean “the parent...
... up, the scriptmight be running as the Web server user or as the owner of the directory that the script is in.On most systems, the script will run as the Web server user. If your script was on ... read more about error reporting in Chapter 23, “Debugging.”The if statement tests the variable $fp to see if a valid file pointer was returned from thefopen call; if not, it prints an error message ... willfinish here, notice that we have closed the HTML tags to give valid HTML.The output when using this approach is shown in Figure 2.3.Using PHP PART I5604 7842 CH02 3/6/01 3:37 PM Page 56File FormatsWhen...
... are scalar variables, which store a single value.An array is a variable that stores a set or sequence of values. One array can have many ele-ments. Each element can hold a single value, such ... looked at scalar variables in Chapter 1, PHP Crash Course.” A scalar variable is a namedlocation in which to store a value; similarly, an array is a named place to store a set of values,thereby ... contentsdirectly from the database. This is covered in Chapter 10, “Accessing Your MySQL Databasefrom the Web with PHP. ”You can also use various functions to extract part of an array or to reorder an array....
... $key2, and $key3. You can see from the output that the values of$key1, $key2, and $key3 are “value1”, “value2”, and “value3”, respectively. These valuescame from the original array.There are two ... $myPrefix_key3”;This code will again produce the output: value1 value2 value3.Note that for extract() to extract an element, that element’s key must be a valid variablename, which means that keys starting ... in reverse order:$value = end ($array);while ($value){echo “$value<br>”;$value = prev($array);}If $array was declared like this:$array = array(1, 2, 3);Using PHP PART I8805 7842...
... fourth parameter can be used to send anyadditional valid email headers. Valid email headers are described in the document RFC822,which is available online if you want more details. (RFCs or ... current form, double-check Appendix A,“Installing PHP 4 and MySQL. ”Through this chapter, we’ll enhance this basic script by making use of PHP s string handlingand regular expression functions.Formatting ... last column shows what value would bereturned from the function.TABLE 4.2 String Case Functions and Their EffectsFunction Description Use Value$subject Feedback from web sitestrtoupper()...
... 7842 CH04 3/6/01 3:41 PM Page 111The length value is optional and represents the point at which PHP will stop replacing. If youdon’t supply this value, the string will be replaced from start ... (strlen($email) < 6){echo “That email address is not valid”;exit; // finish execution of PHP script}Clearly, this is a very simplistic way of validating this information. We will look at better ... string.Introduction to Regular Expressions PHP supports two styles of regular expression syntax: POSIX and Perl. The POSIX style ofregular expression is compiled into PHP by default, but you can use the...