Có 220+ tài liệu thuộc chủ đề "tự học php"
tailieu.vn Xem trực tuyến Tải xuống
echo $num.”<BR>”;. At the beginning of each iteration, the condition is tested. echo “<tr>\n <td align = right>$distance</td>\n”;. echo “ <td align = right>. $distance / 10 .”</td>\n</tr>\n”;. At the end of each iteration, we modified the counter.. expression1 is executed once at the start. expression2 is executed at the end of each iteration. Here you will usually adjust the...
tailieu.vn Xem trực tuyến Tải xuống
a passive mode FTP connection will be opened to the server you specify and a pointer to the start of the file will be returned.. an HTTP connection will be opened to the server you specify and a pointer to the response will be returned. When using HTTP mode, you must specify trailing slashes on directory names, as shown in...
tailieu.vn Xem trực tuyến Tải xuống
and also begins writing? What will be the final contents of the file? Will it be the first order followed by the second order, or vice versa? Will it be one order or the other? Or will it be something less useful, like the two orders interleaved somehow? The answer depends on your operating system, but is often impossible to...
tailieu.vn Xem trực tuyến Tải xuống
echo “$product - $price<br>”;. One thing to note when using each() is that the array keeps track of the current element. If we want to use the array twice in the same script, we need to set the current element back to the start of the array using the function reset. This sets the current element back to the start...
tailieu.vn Xem trực tuyến Tải xuống
Alternatively, we can use the array_reverse() function to reverse the array created by. Note that array_reverse() returns a modified copy of the array. In Chapter 2, “Storing and Retrieving Data,” we stored customer orders in a file. Each line in the file looks something like. To process or fulfill this order, we could load it back into an array. $number_of_orders...
tailieu.vn Xem trực tuyến Tải xuống
<p>Your feedback has been sent.</p>. We have omitted this from the script and other examples for the sake of brevity.. The first three parameters are compulsory and represent the address to send email to, the sub- ject line, and the message contents, respectively. Valid email headers are described in the document RFC822, which is available online if you want more...
tailieu.vn Xem trực tuyến Tải xuống
For example, strcmp() would order the string “2” as greater than the string “12” because it is lexicographically greater. You can read more about natural ordering at http://www.linuxcare.com.au/. For example, strlen(“hello”) returns 5. This can be used for validating input data. By my reasoning, the minimum length of an email address is six characters—for example,. We will look at better...
tailieu.vn Xem trực tuyến Tải xuống
$toaddress = “[email protected]. $toaddress = “[email protected]”;. $toaddress = “[email protected]”;. $toaddress = “[email protected]”;. if (eregi(“bigcustomer\.com”, $email)). $toaddress = “[email protected]”;. You can also use regular expressions to find and replace substrings in the same way as we used. each ($arr)) echo “<br>”.$value;. You can start with the. devshed.com and phpbuilder.com. http://www.zend.com/codex.php?id=88&single=1. Regular expressions take awhile to sink in—the more examples you look...
tailieu.vn Xem trực tuyến Tải xuống
L ISTING 5.3 header.inc—The Reusable Header for All TLA Web Pages. <td align = left><img src = “logo.gif”></td>. <td>. </td>. <td align = right><img src = “logo.gif”></td>. <td width = “25%”>. <span class=menu>Home</span></td>. <span class=menu>Contact</span></td>. <span class=menu>Services</span></td>. <span class=menu>Site Map</span></td>. L ISTING 5.4 footer.inc—The Reusable Footer for All TLA Web Pages. TLA Consulting Pty Ltd.</p>. <a href =”legal.php3”>legal information page</a></p>....
tailieu.vn Xem trực tuyến Tải xuống
Passing a parameter allowed us to get data that was created outside the function—in this case, the array $data —into the function.. We can improve our create_table() function in many ways, but one way might be to allow the caller to specify the border or other attributes of the table. Here is an improved version of the function. echo “<table...
tailieu.vn Xem trực tuyến Tải xuống
To find out more about concepts such as recursion, pass by value/reference, and scope that affect many languages, you can look at a general computer science text book, such as Dietel and Dietel’s C++ How To Program.. Now that you are using include files, require files, and functions to make your code more maintainable and reusable, the next chapter addresses...
tailieu.vn Xem trực tuyến Tải xuống
We then call operations the same way that we call other functions: by using their name and placing any parameters that they need in brackets. The object name is used in the same way as an object’s attributes as follows:. If our operations return something, we can capture that return data as follows:. Note that because class B extends class...
tailieu.vn Xem trực tuyến Tải xuống
TLA Consulting Pty Ltd.</p>. <a href =””>legal information page</a></p>. and DisplayFooter() need to display a large block of static HTML, with no PHP processing. strpos() to see if the URL given is contained in one of the server set variables. To use this page class, we need to include page.inc in a script and call Display(). Uses require to include...
tailieu.vn Xem trực tuyến Tải xuống
You might wonder why we chose to have two separate tables—why not just store Julie’s address in the Orders table? We’ll explore this in more detail in the next section.. The complete set of the table designs for a database is called the database schema. It is akin to a blueprint for the database. A schema should show the tables...
tailieu.vn Xem trực tuyến Tải xuống
If this is the case, in order to work through the examples or to create your own database, you’ll need to have your administrator set up a user and database for you to work with and tell you the username, password, and database name they have assigned to you.. You can either skip the sections of this chapter that explain...
tailieu.vn Xem trực tuyến Tải xuống
You can run an existing SQL file, such as one loaded from the CD-ROM, through MySQL by typing. Using file redirection is pretty handy for this because it means that you can edit your SQL in the text editor of your choice before executing it.. customerid int unsigned not null auto_increment primary key, name char(30) not null,. address char(40) not...
tailieu.vn Xem trực tuyến Tải xuống
Table 8.10 shows the TEXT and BLOB types. Table 8.11 shows the ENUM and SET types.. SET(‘value1’, 64 Columns of this type can hold a set of the. For more information, you can read about setting up a database at the MySQL online manual at http://www.mysql.com/. Now that you know how to create users, databases, and tables, you can concentrate...
tailieu.vn Xem trực tuyến Tải xuống
Let’s look at a few of the more common uses of ALTER TABLE. For example, in our Customers table, we have allowed names to be 30 characters long. We can fix this by changing the data type of the column so that it is 45 characters long instead:. Imagine that a sales tax on books is introduced locally, and that...
tailieu.vn Xem trực tuyến Tải xuống
The MySQL parameter max_connections determines what this limit is. You can alter both of these parameters from their default values by editing the config- uration files. If you use persistent connections and nearly every page in your site involves database access, you are likely to have a persistent connection open for each Apache process. This can cause a problem if...
tailieu.vn Xem trực tuyến Tải xuống
Making your MySQL database secure. Previously (in Chapter 8, “Creating Your Web Database”) we looked at setting up users and granting them privileges. If you’re going to administer a MySQL database, it can be useful to understand exactly what GRANT does and how it works.. When you issue a GRANT statement, it affects tables in the special database called mysql...