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Understanding and Using Sessions in PHP
Where to find tutorials on how to use Sessions in PHP? A collection of tutorials to answer many frequently asked questions on how to use Sessions in PHP. Clear explanations and tutorial exercises are provided on starting and closing sessions, saving and retrieving values in sessions, deciding how se... 2016-10-29, ∼2625🔥, 0💬

Invoking a User Function in PHP
How To Invoke a User Function? in PHP? You can invoke a function by entering the function name followed by a pair of parentheses. If needed, function arguments can be specified as a list of expressions enclosed in parentheses. Here is a PHP script example on how to invoke a user function: &lt;?p... 2016-12-28, ∼2620🔥, 0💬

Updating Existing Rows in PHP
How To Update Existing Rows in a Table in PHP? Updating existing rows in a table requires to run the UPDATE statement with a WHERE clause to identify the row. The following sample script updates one row with two new values: &lt;?php include "mysql_connection.php"; $sql = "UPDATE fyi_links SET no... 2016-10-19, ∼2618🔥, 0💬

Retrieving Session ID from the Current Session in PHP
How To Retrieve the Session ID of the Current Session in PHP? Normally, you don't need to know the session ID of the current session. But if you are interested to know the session ID created by the PHP engine, there are two ways to get it: Calling session() function. It will return the session ID va... 2016-10-26, ∼2617🔥, 0💬

Querying Multiple Tables Jointly in PHP
How To Query Multiple Tables Jointly in PHP? If you want to query information stored in multiple tables, you can use the SELECT statement with a WHERE condition to make an inner join. Assuming that you have 3 tables in a forum system: "users" for user profile, "forums" for forums information, and "p... 2016-10-17, ∼2611🔥, 0💬

Uploading Files to Web Servers in PHP
Where to find tutorials on how to upload files to Web servers in PHP? A collection of tutorials to answer many frequently asked questions on how to upload files to Web servers in PHP. Clear explanations and tutorial exercises are provided on creating file upload HTML tags, setting encoding type on H... 2016-10-17, ∼2609🔥, 0💬

Appending Data to the End of a File in PHP
How To Append New Data to the End of a File in PHP? If you have an existing file, and want to write more data to the end of the file, you can use the fopen($fileName, "a") function. It opens the specified file, moves the file pointer to the end of the file, and returns a file handle. The second argu... 2016-12-02, ∼2608🔥, 0💬

What Is File Upload in PHP
What Is File Upload in PHP? File upload is Web page function which allows visitor to specify a file on the browser's system and submit it to the Web server. This is a very useful function for many interactive Web sites. Some examples are: Web base email systems for users to send attachments. Forums ... 2016-10-17, ∼2608🔥, 0💬

Testing Persistent Cookies in PHP
How To Test Persistent Cookies in PHP? If you want to test persistent cookies, you can copy the following PHP script, setting_persistent_cookies.php ,to your Web server: &lt;?php setcookie("LoginName","FYICent er");setcookie("PreferredColor","Bl ue");setcookie("CouponNumber","0747 0433",time()+60... 2016-11-03, ∼2591🔥, 0💬

What Is a Cookie in PHP
What Is a Cookie in PHP? A cookie is a small amount of information sent by a Web server to a web browser and then sent back unchanged by the browser each time it accesses that server. HTTP cookies are used for authenticating, tracking, and maintaining specific information about users, such as site p... 2016-11-05, ∼2582🔥, 0💬

Firefox Storing Persistent Cookies in PHP
Where Does File Firefox Store Persistent Cookies in PHP? If you change Firefox to keep cookies "until they expire", Firefox will store persistent cookies from all Web servers in a single file at: \Documents and Settings\$user\Application Data\Mozilla \Firefox\Profiles\xby7vgys.def ault\cookie.txt.Op... 2016-10-30, ∼2575🔥, 0💬

Splitting a String in PHP
How To Split a String into Pieces? There are two functions you can use to split a string into pieces: explode(substring, string) - Splitting a string based on a substring. Faster than split(). split(pattern, string) - Splitting a string based on a regular expression pattern. Better than explode() in... 2016-10-13, ∼2575🔥, 0💬

Form Input HTML Tags in PHP
What Are Form Input HTML Tags in PHP? HTML tags that can be used in a form to collect input data are: &lt;SUBMIT ...&gt; - Displayed as a button allow users to submit the form. &lt;INPUT TYPE=TEXT ...&gt; - Displayed as an input field to take an input string. &lt;INPUT TYPE=RADIO... 2016-11-17, ∼2572🔥, 0💬

Specifying Input Values for Radio Buttons in PHP
How To Specify Input Values for Radio Buttons in PHP? Radio buttons can be used in a form for two situations: As a single switch - One &lt;INPUT TYPE=RADIO ...&gt; tag, with no input value specified. When submitted with button pushed down, you will receive a value of "on". When submitted wit... 2016-11-13, ∼2554🔥, 0💬

Information Needed for MySQL Connection in PHP
What Do You Need to Connect PHP to MySQL in PHP? If you want to access MySQL database server in your PHP script, you need to make sure that MySQL module is installed and turned on in your PHP engine. Check the PHP configuration file, php.ini, to make sure the extension=php_mysql.dll is not commented... 2016-10-20, ∼2554🔥, 0💬

Removing an Empty Directory in PHP
How To Remove an Empty Directory in PHP? If you have an empty existing directory and you want to remove it, you can use the rmdir(). Here is a PHP script example on how to use rmdir(): &lt;?php if (file_exists("/temp/download") ){ rmdir("/temp/download"); print("Directory removed.\n"); } else { ... 2016-11-24, ∼2531🔥, 0💬

Applying UUEncode to a String in PHP
How To Apply UUEncode to a String? UUEncode (Unix-to-Unix Encoding) is a simple algorithm to convert a string of any characters into a string of printable characters. UUEncode is reversible. The reverse algorithm is called UUDecode. PHP offers two functions for you to UUEncode or UUDecode a string: ... 2016-10-13, ∼2531🔥, 0💬

What Is a Session ID in PHP
What Is a Session ID in PHP? A session ID is an identification string of a session. Since there might be multiple visitors coming to your Web site at the same time, the PHP engine needs to maintain multiple sessions concurrently. Session IDs are created and maintained by the PHP engine to identify s... 2016-10-26, ∼2527🔥, 0💬

Setting ID Column as Auto-Incremented in PHP
How To Set the ID Column as Auto-Incremented in PHP? Many tables require an ID column to assign a unique ID number for each row in the table. For example, if you have a table to hold forum member profiles, you need an ID number to identify each member. To allow MySQL server to automatically assign a... 2016-10-17, ∼2523🔥, 0💬

Specifying Input Values for Checkboxes in PHP
How To Specify Input Values for Checkboxes in PHP? Checkboxes can be used in a form for two situations: As a single switch - One &lt;INPUT TYPE=CHECKBOX ...&gt; tag, with no input value specified. When submitted with button pushed down, you will receive a value of "on". When submitted with b... 2016-11-13, ∼2517🔥, 0💬

Configuration Settings for File Upload in PHP
What Are the File Upload Settings in Configuration File in PHP? There are several settings in the PHP configuration file related to file uploading: file_uploads = On/Off - Whether or not to allow HTTP file uploads. upload_tmp_dir = directory - The temporary directory used for storing files when doin... 2016-10-14, ∼2510🔥, 0💬

Removing a File in PHP
How To Remove a File in PHP? If you want to remove an existing file, you can use the unlink() function. Here is a PHP script example on how to use unlink(): &lt;?php if (file_exists("/temp/todo.txt") ){ unlink("/temp/todo.txt"); print("File removed.\n"); } else { print("File does not exist.\n");... 2016-11-20, ∼2509🔥, 0💬

Sending a Cookie to the Browser in PHP
How To Send a Cookie to the Browser in PHP? If you want to sent a cookie to the browser when it comes to request your PHP page, you can use the setcookie( ) function. Note that you should call setcookie() function before any output statements. The following script shows you how to set cookies: &... 2016-11-04, ∼2508🔥, 0💬

Where Are Session Values Stored in PHP
Where Are Session Values Stored in PHP? When a value is saved into the current session by one PHP page, the PHP engine must store this value somewhere on Web server, so that the PHP engine can retrieve it back when same visitor comes back to request another PHP page. Where are the session values sto... 2016-10-25, ∼2504🔥, 0💬

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Blockchain Container EPUB General HTML JSON Microsoft Node.js PHP Python RSS Tools Visual Studio Web