Tài liệu PHP and MySQL by Example- P7 doc

... Arrays !and! Strings explode() Splits!up!a!string !by! a!specified!delimiter !and! creates !and! array!of!strings!(see!page!276). implode() Glues!the!elements!of!an!array!together !by! some!delimiter !and! creates!a!string!(see!page!276). ... program. PHP starts executing the instructions in the function, and when finished, returns to the main program and picks up where it left off. Functions can be used over and over again and thus ... The!array_rand()!function!is!given!a!second!argument,!the!number!2,!which!is!the!number!of!random!items!to!return.!The!array!called!$selection!will!contain!another!array!of!two!random!key/index!values. 3 The!first !and! second!randomly!selected!strings!are!printed.!The!value!of!$selection[0]!is!a!random!index!number.!So!is!the!value!of!$selection[1]. !By! using!those!array!elements!as!indexes!for!the!$sayings!array,!a!randomized!string!will!be!returned.!Notice!the!curly!braces!surrounding!the!$sayings!array.!The!curly!braces!block!the!array!elements!so!that!the!first!$!applies!to!the!whole!array.!If!you!remove!the!curly!braces,!you!will!get!an!error.!The!other!way!to!print!this!would!be!to!remove!the!quotes:!!print...

... Why!was !PHP! developed,!what!it!is!used!for, !and! where!can!you!get!it?! 4. What!is !MySQL! used!for !and! where!can!you!get!it?! 5. What!are!the!benefits!of!using !PHP! and! MySQL? ! 6. Why!do !PHP! and! MySQL! work!well!together?! ... PHP. We will learn how to create and execute simple PHP scripts both from the browser and at the command line. We will talk about built-in functions and how to use them by viewing the PHP documentation ... 23,299,550 domains and 1,290,179 IP addresses endorse PHP. See http://www .php. net/usage .php. 1.2.1. Where to Get PHP and Documentation You can get the latest distribution of PHP for Apache and Microsoft...

... require('C:\pub\library\file .php& apos;) or include('/usr/htdocs/file .php& apos;). Just like require() and include(), the require_once() and include_once() statements, respectively, include and evaluate ... server, browser, and so on. PHP automatically converts the names of the form elements into PHP variables and executes any PHP statements, substituting the output within the HTML document (discussed ... a good handle on functions, it is time to talk about how PHP and HTML work together when producing forms. In Chapter 10, “More on PHP Forms,” you will see a number of functions to handle incoming...

... ! PHP provides additional metasymbols to represent a character class. The symbols \d and \D represent a single digit and a single nondigit, respectively (the same as [0-9] and [^0-9]); \w and ... occurrences; two numbers separated by a comma (e.g., {3,10}), represents an inclusive range; and a number followed by a comma (e.g., {4,}), represents a number of characters and any amount after that. ... number as [0-9], it can be represented as \d, and the alternative for representing a nonnumber [^0-9] is \D. Metasymbols are easier to use and and to type. Table 12.9. Metasymbols Symbol What+It+Matches...

... system, the client/server model, and how MySQL fits in. The basics of MySQL database administration were explained by issuing MySQL commands at the mysql command line. There are other tools ... User Tools The phpMyAdmin Tool The phpMyAdmin tool (see Figures 13.13 and 13.14) is written in PHP to handle the administration of MySQL over the Web. It is used to create and drop databases, ... popular and most widely available being the mysql command-line client shown in Example 13.1. Example 13.1. $ mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection...

... server and information, and so on. They return a result-set. Functions are vendor specific, meaning functions supported by MySQL might not be supported by Microsoft SQL Server. See the MySQL documenation ... use PHP functions to connect to the MySQL server and retrieve and display data from a database using the SQL statements. Chapter 14 Lab 45 Go!to!the !MySQL! console !and! use!the!show!command!to!list!all!the!databases.!Use!the !mysql! database.!Now!display!all!of!its!tables. ... orders and product information for that customer from the database and display selected data on the Web page directly from your PHP script. Now you will learn how to integrate PHP and MySQL. PHP...

... have successfully installed and configured PHP and MySQL. A.4.1. Where to Find the Files for the Canvas Gallery Site To install the PHP files on your computer, unzip and copy the entire art gallery ... project was to give you a chance to see the features of both PHP and MySQL working together as a team as described in Chapter 15, PHP and MySQL Integration.” Although there is much that could be ... Installing the MySQL Database Next, you need to install the database. To do this, log into MySQL using either the mysql. exe command prompt (as shown in Figure A.10) or a GUI such as the MySQL Query...

... fgets($filehandle); // Reads a character from file attached to $filehandle $char = fgetc($filehandle); // Reads chunk of bytes from file attached to $filehandle $text = fread($filehandle, $bytes ... a script and within functions. They are special variables provided by PHP to help you manage HTML forms, cookies, sessions, and files, and to get information about your environment and server. ... assume register_globals is set to “On.” How PHP Handles Form Input For each HTML form parameter, PHP creates a global variable by the same name and makes it available to your script. For example,...

... $x and $y and $z; echo "$x and $y and $z <em>yields</em> " . (int)$result .".\n<br />"; 4 $result = ($x and $y and $z); echo "($x and $y and ... About PHP Operators and Expressions Data objects can be manipulated in a number of ways by the large number of operators provided by PHP. Operators are symbols, such as +, -, =, >, and <, ... **Figure 5.14. The PHP script output from Example 5.11. ** The Difference Between &&/|| and the Words and/ or You can use the words and and or to replace && and ||, respectively,...

... Because PHP uses the ASCII collating sequence, an uppercase “A” is represented as decimal 65 and an uppercase “B” as decimal 66, and so on. On the other hand, a lowercase “a” is 97 and a lowercase ... delimiter and returns an array. The implode() function takes an array and joins the elements together to form a string. Because these functions require that you understand PHP arrays and regular ... a String PHP provides a number of functions to split strings. The split() and spliti() functions split up a string and return an array. The explode() function splits up a string by a specified...