Variable Operators && {}

[JMJimmy]

This is two questions actually,

first I was wondering what the { } meant in PHP ie: what is the difference between $foo and {$foo}? I know what it means when using variable variables & functions but not on it's own.

Second,

Is there a way to build a bit of code with variable operator? as in:

$foo = array('*', '/', '+', '-');
$bar = 2;

$s = sizeof($foo);
for($i=0;$i<$s;$i++){
  echo "$bar $foo[$i] $bar =".($bar ($foo[$i]) $bar)."<BR>\n";
}

/*

Would Print (if it worked):

2 * 2 = 4
2 / 2 = 1
2 + 2 = 4
2 - 2 = 0

*/

Is there any way of doing it that doesn't spit out a parse error?

Thanks.

JMJimmy

[veron]

$foo = array('*', '/', '+', '-');
$bar = 2;

$s = sizeof($foo);
for($i=0;$i<$s;$i++){
  $foobar = "\$result = ".$bar.$foo[$i].$bar.";";
  eval($foobar);
  echo "$bar $foo[$i] $bar = $result<BR>\n";
}

[abnfire]

it also tells where is loop is starting and ending, so you don't have to write the end statment for any loop or any functions.

[JMJimmy]

Thanks veron,

and my appologies abnfire I should have been a little clearer about {} - I was refering to their use with variables (non-variable variables that is): {$foo}

JMJimmy