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What Is a Session
What Is a Session? - PHP Script Tips - Understanding and Using Sessions A session is a logical object created by the PHP engine to allow you to preserve data across subsequent HTTP requests. There is only one session object available to your PHP scripts at any time. Data saved to the session by a sc... 2007-04-19, 4965👍, 0💬

What's Wrong with "while ($c=fgetc($f)) {}"
What's Wrong with "while ($c=fgetc($f)) {}"? - PHP Script Tips - Reading and Writing Files If you are using "while ($c=fgetc($f)) {}" to loop through each character in a file, the loop may end in the middle of the file when there is a "0" character, because PHP treats "0" as Boolean false. To proper... 2007-04-22, 4964👍, 0💬

How Values in Arrays Are Indexed
How Values in Arrays Are Indexed? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Values in an array are all indexed their corresponding keys. Because we can use either an integer or a string as a key in an array, we can divide arrays into 3 categories: Numerical Array - All ... 2007-04-20, 4964👍, 0💬

How To Remove an Empty Directory
How To Remove an Empty Directory? - PHP Script Tips - Working with Directoris and Files 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/downl... 2007-04-23, 4959👍, 0💬

How the Values Are Ordered in an Array
How the Values Are Ordered in an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations PHP says that an array is an ordered map. But how the values are ordered in an array? The answer is simple. Values are stored in the same order as they are inserted like a queue. If you wa... 2007-04-20, 4957👍, 0💬

How To Create a New Database
How To Create a New Database? - MySQL FAQs - PHP Connections and Query Execution A database in a MySQL server is a logical container used to group tables and other data objects together as a unit. If you are a the administrator of the server, you can create a new databases using the CREATE DATABASE ... 2007-05-10, 4956👍, 0💬

How To Get MySQL Statement Execution Errors
How To Get MySQL Statement Execution Errors? - MySQL FAQs - PHP Connections and Query Execution When you execute a MySQL statement with mysql_query(), and the statement failed, mysql_query() will return the Boolean value FALSE. This is good enough to tell that there is something wrong with that stat... 2007-05-10, 4945👍, 0💬

How To Download and Install PHP for Windows
How To Download and Install PHP for Windows? - PHP Script Tips - Downloading and Installing PHP The best way to download and install PHP on Windows systems is to: Go to http://www.php.net, which is the official Web site for PHP. Download PHP binary version for Windows in ZIP format. Unzip the downlo... 2007-04-22, 4944👍, 0💬

How Cookies Are Transported from Servers to Browsers
How Cookies Are Transported from Servers to Browsers? - PHP Script Tips - Understanding and Managing Cookies Cookies are transported from a Web server to a Web browser in the header area of the HTTP response message. Each cookie will be included in a separate "Set-Cookie:" header line in the followi... 2007-04-24, 4943👍, 0💬

How To Apply UUEncode to a String
How To Apply UUEncode to a String? - PHP Script Tips - PHP Built-in Functions for Strings 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 offeres ... 2007-04-21, 4939👍, 0💬

How To Test Cookies on a Web Server
How To Test Cookies on a Web Server? - PHP Script Tips - Understanding and Managing Cookies If you want to test cookies with a browser, you need to run a Web server locally, or have access to a Web server remotely. Then you can copy the following PHP cookie test page, setting_receiving_cookies.php, ... 2007-04-25, 4937👍, 0💬

Can You Specify the "new line" Character in Single-Quoted Strings
Can You Specify the "new line" Character in Single-Quoted Strings? - PHP Script Tips - Understanding String Literals and Operations You can not specify the "new line" character in a single-quoted string. If you don't believe, try this script: &lt;?php echo '\n will not work in single quoted stri... 2007-04-20, 4933👍, 0💬

What Is a Result Set Object
What Is a Result Set Object? - PHP Script Tips - Working with MySQL Database A result set object is a logical representation of data rows returned by mysql_query() function on SELECT statements. Every result set object has an internal pointer used to identify the current row in the result set. Once ... 2007-04-19, 4932👍, 0💬

How To Process the Uploaded Files
How To Process the Uploaded Files? - PHP Script Tips - Uploading Files to Web Servers How to process the uploaded files? The answer is really depending on your application. For example: You can attached the outgoing emails, if the uploaded files are email attachments. You can move them to user's Web... 2007-04-19, 4930👍, 0💬

How Many Escape Sequences Are Recognized in Double-Quoted Strings
How Many Escape Sequences Are Recognized in Double-Quoted Strings? - PHP Script Tips - Understanding String Literals and Operations There are 12 escape sequences you can use in double-quoted strings: \\ - Represents the back slash character. \" - Represents the double quote character. \$ - Represent... 2007-04-20, 4927👍, 0💬

How Many Escape Sequences Are Recognized in Single-Quoted Strings
How Many Escape Sequences Are Recognized in Single-Quoted Strings? - PHP Script Tips - Understanding String Literals and Operations There are 2 escape sequences you can use in single-quoted strings: \\ - Represents the back slash character. \' - Represents the single quote character. 2007-04-20, 4924👍, 0💬

How To Create a Directory
How To Create a Directory? - PHP Script Tips - Working with Directoris and Files You can use the mkdir() function to create a directory. Here is a PHP script example on how to use mkdir(): &lt;?php if (file_exists("/temp/download") ){ print("Directory already exists.\n"); } else { mkdir("/temp/d... 2007-04-23, 4921👍, 0💬

How To Insert Rows Based on SELECT Statements
How To Insert Rows Based on SELECT Statements? - PHP Script Tips - Working with MySQL Database If want to insert rows into a table based on data rows from other tables, you can use a sub-query inside the INSERT statement as shown in the following script example: &lt;?php include "mysql_connectio... 2007-04-19, 4916👍, 0💬

How To Update an Existing Rows in a Table
How To Update an Existing Rows in a Table? - PHP Script Tips - Working with MySQL Database 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_conn... 2007-04-19, 4915👍, 0💬

How To Run a SQL Statement
How To Run a SQL Statement? - PHP Script Tips - Working with MySQL Database You can run any types of SQL statements through the mysql_query() function. It takes the SQL statement as a string and returns different types of data depending on the SQL statement type and execution status: Returning FALSE... 2007-04-18, 4908👍, 0💬

How Many Ways to Include Variables in Double-Quoted Strings
How Many Ways to Include Variables in Double-Quoted Strings? - PHP Script Tips - Understanding String Literals and Operations There are 3 formats to include variables in double-quoted strings: "part 1 $variable part 2" - This is the simplest format to include a variable in a string. The variable nam... 2007-04-20, 4904👍, 0💬

What is differece between echo and printf in php
What is differece between echo and printf in php PHP Echo Vs Print Diagram <?php print "Hello World! "; echo "Hello World! "; // The above outputs the text "Hello World!" on two separate lines. // Notice they are identical in output! print ("Hello World! "); echo ("Hello World! "); // The above a... 2011-08-01, 4895👍, 0💬

How To Pass an Argument to a Function
How To Pass an Argument to a Function? - PHP Script Tips - Creating Your Own Functions To pass an argument to a function, you need to: Add an argument definition in the function definition. Add a value as an argument when invoking the function. Here is a PHP script on how to use arguments in a funct... 2007-04-24, 4894👍, 0💬

What Types of Data Can Be Used as Array Keys
What Types of Data Can Be Used as Array Keys? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Two types of data can be used as array keys: string and integer. When a string is used as a key and the string represent an integer, PHP will convert the string into a integer and us... 2007-04-14, 4890👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML