double dollar sign meaning

[webguync]

sorry if this is a stupid question, but what does a double dollar sign indicate in php? eg: $$MyPrice

[trq]

Variable variables.

[dennismonsewicz]

check this out:

 

http://forums.digitalpoint.com/showthread.php?t=9338

[eddierosenthal]

<?

$myprice = 10.00;

$item = $myprice;

 

$$myprice = 20.00;

echo "the value of \$\$myprice is" . $$myprice;

?>

 

output is 'the value of $$myprice is20'

 

$numberofnames = 10;

if you have fields with names like name1, name2, name3 etc. you could

for ( $i = 1; $i <= $numberofnames; $i++) {

  $t = "name$i";

echo $$t . "<br>" ;

}

 

or

<?

$numberofnames = 10;

$name1 = "my string here";

#if you have fields with names like name1, name2, name3 etc. you could

for ( $i = 1; $i <= $numberofnames; $i++) {

  $t = "name$i";

  echo $$t ;

 

 

}

?>

yields output 'my string here'

 

 

 

so there is some relevance to using it if you have to iterate thru values that have similar names

or possibly associate arrays?