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@ symbol before any variable
Why do we put @ symbol before any variable?
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What is diff between srand & shuffle2-Mysql command to fetch onlythe unique values?3-how can a script come to a clear termination?4-How do i store binary in my sql?5-How do i limit the no of rows 1 get out of my database ?6- How do i find out weather a no is odd or even ?7-Can I coonect to Ms-access database w/o a DSN?8- How can we remove duplicate values from an array ?9-How an we get the ID genrated from the previous insert operation ?10-Can I run sevral versions of Php of the same time ?
amitverma
- Feb 6th, 2009
1> srand function seeds the random number generator with given seed. Function shuffle is used for shuffling the array values. This function generates new keys for the array elements.2> select distinct...
brijbhushansh
- Oct 14th, 2008
<?php$input = array ("a" => "green", "red", "b" => "green", "blue", "red");$result = array_unique ($input);print_r($result);?> This will output: Array( [a] => green [0] => red [1] => blue)
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How do you create subdomains using PHP?
How will you create sub domains without manually creating it from Control Panel? Sub Domains must me created by using PHP script for a membership website. Answer with a sample script.
abc
- Sep 12th, 2011
Http://www.domain.com/?a=user --> http://user.domain.com/
dipeshpatel
- Apr 14th, 2009
You can create virtual sub domain via .htaccess file. For this you can get
help with Wordpress MU 2.7.
In wordpress wu 2.7 is supporting this features.
You need any more detail or you have any confusion, please get back to me.
Thanks
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Session_register and $_session
What is the difference between session_register and $_session?
abc
- Sep 12th, 2011
$_session for one or more variable
session_register for global variablesrubin2008
- May 16th, 2010
session_register is php function used to register variables with the current session.But it will work only when register globals is turned on in php.ini configuration file.$_SESSION is a supergl...
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Set JavaScript Variable Value
Can you set JavaScript variable value to php variable? Justify your answer?
El Houba Mohammed Amine
- Jun 2nd, 2014
No impossible , php is server side , java script is executed in client browser. we can set a java script variable with some php value , not the opposite
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Arrays
How to combine 2 arrays?
rubin2008
- May 16th, 2010
Arrays can be combined using array_merge() function Description of array_merge function is as follows.array_merge() merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.
gmanon
- Feb 3rd, 2010
//The array_merge() and array_combine(), both combine arrays. /*It merges two arrays, one after the other.*/$comArrays = array_merge(Array1,Array2);$comArrays = $larger_array12; /*It combines tw...
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What is the difference between echo and print statement?
bluemonk
- Aug 31st, 2008
Both echo and print are language constructs. However print() acts like a function in that it returns a value and can be used in complex expressions.Furthermore, echo without parentheses can take multiple arguments. Echo with parentheses and print can only take a single argument.
subhadeep21
- Jan 17th, 2008
Both are language construct.The only difference is:print can evealuate expression andecho can not.
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What is the difference between explode and split?
Split - Splits string into array by regular expression.Explode - Split a string by stringHope this helps
saurabh7446
- Sep 21st, 2011
Explode convert string to array. for exmaple.
split take multiple identifier.Code- span style="color: #0000ff;">"anil,mukesh,neeraj"",",$x);
- //"," is an identifier.
abc
- Sep 12th, 2011
Explode function is used to convert string into array & split is used to return an array
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What is the effect of large number of data stored in a database on a website ?
I.e. if there is a 5,00,000 records on the database is it affect website. what is the solution for this.
pankajkhairnar
- Aug 28th, 2009
Website will get slow by large number of data but it can be reduced to as minimal as really less data by using some database techniques like. Indexing the columns which you want to use for search or c...
bhavsarpr
- Jun 9th, 2009
Following can be effect of large number of data stored in a database on a website.1. Site Can become really slow in case queries used are not proper and code logic for processing large data is not pro...
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Website development in PHP and Java
What is difference between developing website using Java and PHP?
gmanon
- Feb 3rd, 2010
Java is a precompiled language. The Java Virtual Machine transform the source code into bycode. PHP is source code that is processed by the server as a server module or CGI. PHP is m...
pankajha.100
- Aug 13th, 2009
Java is used for mainly distributed i.e When n tier application are developed, eg. Bank System where as PHP used for web development.
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What is htaccess?
What is htaccess? Why do we use this and Where?
abc
- Sep 12th, 2011
Using this ".htaccess" file, we can control "php.ini" and "httpd.conf" file. For php.ini: for register globals, Enter "php_flag register_globals on" in that file and place it inside the context fold...
tirumurugan
- Jun 19th, 2009
Htaccess (hypertextaccess) is the default name of a directory-level configuration file that allows for decentralized management of web server configuration. The .htaccess file is placed inside the web tree, and is able to override a subset of the server's global configuration;
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Upload Videos
How do you upload videos using PHP & MySQL
vinit
- Dec 14th, 2012
For uploading videos you need not store the video in database. Just you store the video path in database. You store the videos in a separate folder like video_uploads. After uploading you can call tho...
ajayvaineela
- Oct 21st, 2009
For uploading videos you need not store the video in database. Just?you store the video path in database. You store the videos in a separate folder like video_uploads. After uploading?you can call...
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Echo and Print
What is the difference between "echo" and "print" in PHP?
kumarkiranm
- Mar 4th, 2011
echo is the most primitive of them and just outputs the contents following the construct to the screen.print is also a construct (so parentheses are optional when calling it) but it returns&...
seanmullins
- Jul 14th, 2010
They are actually both language constructs (printf() is a function)The main difference is that print returns a value, so you could do something other than simply display the string. This makes it a little slower than echo.Unless you need the return value, use echo. Plus, it's easier to type!
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Percentage Bar for Processing
While in case of download, How will you make a percentage bar showing current status of total 100%?
abc
- Sep 12th, 2011
1. Use Image for displaying Percentage Bar.
2. Change width of Image depending on Processing completed. -
Php fragment
1- Write php fragment code to print out the data submitted by the user through html form using get or post method? we need to display the field name and value??
Why we need a function like fetch_object and what is the purpose of using it?
we have fetch_array to fetch a row from a result set... in what way the fetch_object function is useful... at which situation it is used? every question is like what is the difference and the answers is just like the following 'fetch_array" gives an array of any type but fetch_object will return an object.... but WHY???
abc
- Sep 12th, 2011
Fetch array normally retrieves the records based on array index. i.e. like $row[1], but if you want to retrieve the record based on the column name we can use fetch_object i.e. $row['username']
amitverma
- Feb 9th, 2009
Procedural programmers do use functional and OOPs programmers use class and objects.So it's just a facility and not a burden on anybody. If you're following OOPs pattern then yo...
How do you define an inline style?
abc
- Sep 12th, 2011
Inline style start & end using php/html tag
krbhupinder
- May 23rd, 2011
We can define inline style as given below:for example u want to giv style to some division:u can give style like ths:<div id="name" style:'height:100px;width:200px;'>and so on other attributes can be defined here
Q1: Describe the process from a users web browser, to the web-server and back again.Q2: How would you check that a string is a palindrome?*hint* using only one statement.Q3: What's the maximum size of integral numbers in PHP? How would you manipulate very large numbers? (e.g. 8+ billion)Q4: What is 'htmlentities' and it's relationship with preventing XSS attacks/vulnerabilities?Q5: Describe the differences between the object models in PHP 4 and PHP 5.
msdwivedi
- Dec 28th, 2007
Answer 1: when user opens their browser and type the url in the address bar they actually sends requests to web-server, clicking on links or submitting a form may also considered as request. &n...
kalp.mehta
- Dec 16th, 2007
1) When user submits the form from the browser, the form is submitted to the Web server where it filters the server-side languages and client-side languages. Now the server side languages is parsed an...
What is the diffrence between Notify URL and Return URL?
abc
- Sep 12th, 2011
Notify URL for notification & return URL for return the data
arghadip
- May 21st, 2011
These terms are usually used for PayPal / other payment gateway implementation. After successful payment made through Express Checkout of PayPal, the payment gateway will return the user to a page cal...
Ans