[SOLVED] parameter to function

[sowmithrii]

hi guys, a small doubt regarding parameter passing to  functions.

 

i saw in some codes the way of passing parameters as &$parameter1 instead of just $parameter1. what will be the difference in these two parameter while accepting data...

 

ex:

function functionname($parameter3, $parameter2, $parameter1)

{

.......

}

 

funciton functionname($parameter3, $parameter2, &$parameter1)

{

........

}

 

what is the difference in the functionality of the two fucntions if they are mentioned earlier

 

regards

sowmithrii

[rajivgonsalves]

that is passing the parameter by reference so say you got the following example which will effect the original variable consider the following

 

<?php
$strString = "test";



function fnTest($strParam)
{
$strParam = "test no change";
}

function fnTest1(&$strParam)
{
$strParam = "test changed";
}

print $strString."<BR>"; // print "test";
fnTest($strString);
print $strString."<BR>"; // print "test";
fnTest1($strString);
print $strString."<BR>"; // print "test changed";


?>

 

hope its helpful...

[sowmithrii]

thanks mr.rajiv ,

 

  got solved.