why this function display sharma not love on browser
<?php
$a='abc';
define("h",sharma);
define("h",love);
echo h;
?>
and second
why this will show nothing on browers?
<?php
$a='abc';
bb();
function bb()
{
echo $a;
}
?>
why this function display sharma not love on browser
<?php
$a='abc';
define("h",sharma);
define("h",love);
echo h;
?>
and second
why this will show nothing on browers?
<?php
$a='abc';
bb();
function bb()
{
echo $a;
}
?>
and second<?php $a='abc'; bb(); function bb() { echo $a; } ?>
In this section, the variable $a is local, and not defined in the global scope. When you try to reference $a inside the function, because it is not defined inside the function, nor passed as a variable TO the function, it reads that inside of the function, $a=''. Now, if you were to code this:
why this will show nothing on browers?
<?php
$a='abc';
global $a;
bb();
function bb()
{
echo $a;
}
?>
...the browser would print 'abc', because $a='abc' regardless of where it is called in the script.
NOTE: Unless otherwise necessary, I do not personally advocate the overuse of global.
why this function display sharma not love on browser
<?php $a='abc'; define("h",sharma); define("h",love); echo h; ?>
Not sure why $a is in this example, but ok. :)
These are the differences between constants and variables:
Constants do not have a dollar sign ($) before them;
Constants may only be defined using the define() function, not by simple assignment;
Constants may be defined and accessed anywhere without regard to variable scoping rules;
Constants may not be redefined or undefined once they have been set; and
Constants may only evaluate to scalar values.You can find the whole skinny here:
http://www.php.net/manual/en/language.constants.php
Hope this helped.
thnx 4 reply...
but after declaring that variable global it is not showing anything on my browers.
i have understand second answer.
thnx 4 reply...
but after declaring that variable global it is not showing anything on my browers.
i understand second answer.
That was a misstep on my part.
<?php
$a='abc';
bb();
function bb() {
global $a;
echo $a;
}
?>
The global is called where it is needed, here inside the function.
I just so rarely use them that I forget their specifics sometimes. Sorry about that. :)
it's ok no sorry...
i got the answer... your link help me.. thankx angain
it's ok no sorry...
i got the answer... your link help me.. thankx again
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