PHP - actually execute value of variable

Question

I have an array of fractions:

$fractions = array('1/8', '1/4', '1/2');

Is there any way that I can get PHP to actually perform the division to get a decimal value?

Something like:

foreach($fractions as $value) {
    $decimal = [the result of 1 divided by 8, or whatever the current fraction is in value];
}

You can construct your array much better, but if you won't - as AJ said, use eval() — N.B.
– N.B., Commented May 18, 2011 at 22:14

Jage · Accepted Answer · 2011-05-18 22:14:05Z

6

The way you have it, you should just explode and do your division:

foreach($fractions as $value) {
    $exp = explode('/',$value);
    $decimal =  $exp[0] /  $exp[1];
}

You could also eval(), but I usually try not to do that. It is a performance hit as well.

answered May 18, 2011 at 22:14

Jage

8,1164 gold badges34 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Community · Accepted Answer · 2023-11-17 20:42:18Z

3

You can call eval():

$fractions = array('1/8', '1/4', '1/2');

foreach($fractions as $value) {
    $decimal = eval("return $value;");
    echo "$value = $decimal\n";
}

edited Nov 17, 2023 at 20:42

CommunityBot

11 silver badge

answered May 18, 2011 at 22:13

AJ.

28.3k19 gold badges89 silver badges98 bronze badges

2 Comments

runfalk Over a year ago

For this to work the line must read $decimal = eval("return $value;"); or the eval will fail with Parse error: syntax error, unexpected $end. I don't really like using eval either

daemonofchaos Over a year ago

Thanks for the additional suggestion AJ. I will keep eval in mind for possible future use.

Collectives™ on Stack Overflow

PHP - actually execute value of variable

2 Answers 2

Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related