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Single Cookie Size Limit in PHP
How Large Can a Single Cookie Be in PHP? How large can a single cookie be? The answer is depending what is the Web browser your visitor is using. Each browser has its own limit: Internet Explorer (IE): about 3904 bytes Mozilla Firefox: about 3136 bytes If you want to test this limit, copy this sampl...
2016-10-30, ∼2526🔥, 0💬

Writing a String to a File without a File Handle in PHP
How To Write a String to a File without a File Handle in PHP? If you have a string, want to write it to a file, and you don't want to open the file with a file handle, you can use the file_put_contents(). It opens the specified file, writes the specified string, closes the file, and returns the numb...
2016-11-27, ∼2504🔥, 0💬

Malicious Website Stealing Cookies in PHP
How Can Other Webmaster Steal Your Cookies in PHP? All browsers are following the security rule that your cookies are sent back only to your Web servers. They will not be sent to other Webmaster's Web server directly. However, other Webmaster may design some malicious JavaScript codes to steal cooki...
2016-10-29, ∼2499🔥, 0💬

Randomly Retrieving Array Values in PHP
How To Randomly Retrieve a Value from an Array in PHP? If you have a list of favorite greeting messages, and want to randomly select one of them to be used in an email, you can use the array_rand() function. Here is a PHP example script: &lt;?php $array = array("Hello!", "Hi!", "Allo!", "Hallo!"...
2017-01-11, ∼2497🔥, 0💬

Specifying Argument Default Values in PHP
How To Specify Argument Default Values? in PHP? If you want to allow the caller to skip an argument when calling a function, you can define the argument with a default value when defining the function. Adding a default value to an argument can be done like this "function name($arg=expression){}. Her...
2016-12-04, ∼2495🔥, 0💬

Domain and Path Attributes for Cookies in PHP
What Are Domain and Path Attributes for Cookies in PHP? Cookies can also be defined with two other attributes: Domain - A cookie attribute that defines the domain name of Web servers where this cookie is valid. Web browsers holding this cookie should not sent it back to any Web server outside the sp...
2016-11-03, ∼2478🔥, 0💬

Sorting an Array by Values in PHP
How To Sort an Array by Values in PHP? Sorting an array by values is doable by using the sort() function. It will re-order all pairs of keys and values based on the alphanumeric order of the values. Then it will replace all keys with integer keys sequentially starting with 0. So using sort() on arra...
2017-01-21, ∼2472🔥, 0💬

Counting the Number of Values in an Array in PHP
How To Get the Total Number of Values in an Array in PHP? You can get the total number of values in an array by using the count() function. Here is a PHP example script: &lt;?php $array = array("PHP", "Perl", "Java"); print_r("Size 1: ".count($array)."\n"); $array = array(); print_r("Size 2: ".c...
2017-01-29, ∼2470🔥, 0💬

Understanding and Managing Cookies in PHP
Where to find tutorials on how to manage Cookies in PHP? A collection of tutorials to answer many frequently asked questions how to manage Cookies in PHP. Clear explanations and tutorial exercises are provided on setting and receiving cookies, creating and removing persistent cookies, specifying dom...
2016-11-05, ∼2470🔥, 0💬

Returning a Reference from a Function in PHP
How To Return a Reference from a Function? in PHP? To return a reference from a function, you need to: Add the reference operator "&amp;" when defining the function. Add the reference operator "&amp;" when invoking the function. Here is a PHP script on how to return a reference from a functi...
2016-12-08, ∼2467🔥, 0💬

Retrieving Submitted Form Data in PHP
How To Retrieve the Submitted Form Data in PHP? The best way to retrieve the form data submitted by your visitor is to use the $_REQUEST array. The keys in this array will be the field names defined in form. The values in this array will be the values entered by your visitor in the input fields. The...
2016-11-15, ∼2463🔥, 0💬

Splitting a String into an Array in PHP
How To Split a String into an Array of Substring in PHP? There are two functions you can use to split a string into an Array of Substring: explode(substring, string) - Splitting a string based on a substring. Faster than split(). split(pattern, string) - Splitting a string based on a regular express...
2016-12-28, ∼2459🔥, 0💬

Reformatting a Paragraph of Text in PHP
How To Reformat a Paragraph of Text? You can wordwrap() reformat a paragraph of text by wrapping lines with a fixed length. Here is a PHP script on how to use wordwrap(): &lt;?php $string = "TRADING ON MARGIN POSES ADDITIONAL RISKS AND IS NOT SUITABLE FOR ALL INVESTORS. A COMPLETE LIST OF THE RI...
2024-02-27, ∼2453🔥, 5💬

Creating a Web Form in PHP
How To Create a Web Form in PHP? If you take input data from visitors on your Web site, you can create a Web form with input fields to allow visitors to fill in data and submit the data to your server for processing. A Web form can be created with the &lt;FORM&gt; tag with some input tags. T...
2016-11-17, ∼2449🔥, 0💬

Finding a Substring in PHP
How to Find a Substring from a Given String? To find a substring in a given string, you can use the strpos() function. If you call strpos($haystack, $needle), it will try to find the position of the first occurrence of the $needle string in the $haystack string. If found, it will return a non-negati...
2016-10-13, ∼2446🔥, 0💬

Passing Arrays by Values to Functions in PHP
How Arrays Are Passed Through Arguments? in PHP? Like a normal variable, an array is passed through an argument by value, not by reference. That means when an array is passed as an argument, a copy of the array will be passed into the function. Modifying that copy inside the function will not impact...
2016-12-18, ∼2428🔥, 0💬

Putting Directory Entries into an Array in PHP
How To Dump the Contents of a Directory into an Array in PHP? If you want to get the contents of a directory into an array, you can use the scandir() function. It gets a list of all the files and sub directories of the specified directory and returns the list as an array. The returning list also inc...
2016-11-20, ∼2427🔥, 0💬

Inserting Rows Based on SELECT Statement in PHP
How To Insert Rows Based on SELECT Statements in PHP? 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_connection.php"; $sql = "INSERT INTO fyi_links" . ...
2016-10-20, ∼2412🔥, 0💬

Replacing a Substring in PHP
How To Replace a Substring in a Given String? If you know the position of a substring in a given string, you can replace that substring by another string by using the substr_replace() function. Here is a PHP script on how to use substr_replace(): &lt;?php $string = "Warning: System will shutdown...
2016-10-13, ∼2404🔥, 0💬

Cookie Management on Firefox in PHP
How Does Firefox Manage Cookies in PHP? Firefox browser allows you to delete old cookies, and gives you options to keep persistent cookies in cookie files until they reach their expiration time. The following tutorial shows you how to manage cookies in Firefox: Run Firefox Go to Tools/Options Click ...
2016-10-30, ∼2397🔥, 0💬

Processing Web Forms in PHP
Where to find tutorials on how to process Web Forms in PHP? A collection of tutorials to answer many frequently asked questions on how to process Web Forms in PHP. Clear explanations and tutorial exercises are provided on generating and processing Web forms, getting values out of $_REQUEST, processi...
2016-11-17, ∼2394🔥, 0💬

Sorting an Array by Keys in PHP
How To Sort an Array by Keys in PHP? Sorting an array by keys can be done by using the ksort() function. It will re-order all pairs of keys and values based on the alphanumeric order of the keys. Here is a PHP script on how to use ksort(): &lt;?php $mixed = array(); $mixed["Zero"] = "PHP"; $mixe...
2017-01-21, ∼2391🔥, 0💬

Passing Arrays to Function in PHP
Can You Pass an Array into a Function? in PHP? You can pass an array into a function in the same as a normal variable. No special syntax needed. Here is a PHP script on how to pass an array to a function: &lt;?php function average($array) { $sum = array_sum($array); $count = count($array); retur...
2023-04-06, ∼2376🔥, 1💬

💬 2023-04-06 Durga: Good

Understanding PHP String Literals and Operations
Where to find tutorials for PHP String Literals and Operations? A collection of tutorials on PHP string literals, operations and conversion. Clear explanations and tutorial exercises are provided on single-quoted strings, double-quoted strings, string elements, concatenation, converting values to st...
2016-10-13, ∼2364🔥, 0💬

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