function returns a letter

[martinb7]

Hi, i was wondering how you could make a function that returns a letter e.g. a or b or c etc because my website has a scoreboard system where members get put randomly on side a or b or c when they register.

any ideass??

thanx


Martin

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[sleipnir214]

Assuming your question could be better phrased as, "How would you write a function that randomly returns a single letter?"

<?php

function random_letter ($start = 'a', $finish = 'd')
{
	return chr (rand (ord ($start), ord ($finish)));
}

?>

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[skiflyer]

function randLet() {
  $possibilities=array('a','b','c');
  $size=count($possibilities) - 1;
  $index=rand(0,$size);

  return $possibilties[$index];
}

 

[martinb7]

ok but then how do i echo() the answers onto the screen or assign them a new variable of $side??

Martin

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[sleipnir214]

To assign the value returned by the funtion to a variable, I recommend that you use PHP's basic assignment operator.

You can either perform the assignment to the variable then echo the variable or echo the return from the function directly.

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[martinb7]

i dont understand sorry (

Martin

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[sleipnir214]

You asked how to assign the value returned from a function to a variable. I provided a link to the PHP online manual page on assignment operators. Did you follow the link?



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[martinb7]

yes i did, but i dont understand how to assign a variable from a function.


Martin

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[sleipnir214]

Exactly the same way you assign a variable from anything else. The variable goes on the left-hand side of the assignment operator and the function reference goes on the right-hand side.

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[ascikey]

<?php
myVar=myFunction();
echo myVar;
?>

 

[martinb7]

yea i understand that but if i use skiflyer's example, it doesnt display anything on the page, why not??

<?php
function randLet() {
  $possibilities=array('a','b','c');
  $size=count($possibilities) - 1;
  $index=rand(0,$size);

  return $possibilties[$index];
}

$myVar=randLet();
echo $myVar;
?>

Martin

Computing help and info:

http://www.webrevolt.biz

 

[sleipnir214]

It's a typo.

In your function, you return an element of $possibilties. But the array is named $possibil[red]i[/red]ties

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[skiflyer]

I must have put a decimal point in the wrong place or something. S***, I always do that, I always mess up some mundane detail.

Sorry about that.