What is the difference between $message and $$message ?
Answers were Sorted based on User's Feedback
$message is variable and $$message is variable variable.
$message="hello";
$$message="world";
echo $hello; // prints world
echo ${$message} //prints world
variable variable cant be used in php superglobalarray. and
cant use in functions and within classes
Is This Answer Correct ? | 25 Yes | 6 No |
Answer / vikram
$message="hello";
$hello="world";
echo $$message;
// will print "world"..this concept is called "variable of
variables"...
Is This Answer Correct ? | 6 Yes | 3 No |
Answer / mohit
$message is a variable and $$message is a refrence variable
that have the refrence of $message.
Is This Answer Correct ? | 5 Yes | 2 No |
Answer / laxmikanta pradhan
$message is variable and $$message is variable variable i.e.
$message is a variable whereas $$message is a refrence
variable having the refrence of $message.
Ex. $message="hello";
$$message="world";
echo $hello; // prints world
echo ${$message} //prints world
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / abhilash
if $message1 = "hello";
and $message = "message1";
den $$message = hello
Is This Answer Correct ? | 6 Yes | 9 No |
Answer / keshab
$test = "example";
$temp = "test";
echo $temp // output is "test";
echo $$temp// output is "example";
thanks
Is This Answer Correct ? | 1 Yes | 4 No |
Explain the difference between array_merge() and array_combine()?
Why super () is used in java?
Tell me how to execute an sql query? How to fetch its result?
Which function will you use to create an array?
What is get and post method in php?
What is php dependency injection?
What is .htaccessfile and use of this file
What is inheritance in php?
How to convert the first character to upper case?
How do you add a joomla Template in admin panel of joomla? Please mention the steps
3 Answers Cognizant, T3 Softwares,
Explain Booleans in PHP?
if i give Limit for mysql query through php command line script like this for ex. $limit=500; $total_items = 1500; for($start=0;$start<$total_items;){ $command = "/usr/bin/php -q /home/sitename/public_html/admin/feedmanager/test.php feedid ".$_GET['feedid']." start ".$start." end ".$limit ; $start = $start+$limit; $command_result = system($command); } so it's execute command for 3 times so it give limit to sql query but if i have 27000 data so it takes long time? so my question is that is that any way from php command line script that i can use for collect all the data at once?