performance about string convert to int

Question

If i have sting like

$str = '515';

I want convert it to int, is better use

$str = $str * 1;

than use

$str = intval($str);

which performance is better?

xdazz · Accepted Answer · 2011-09-16 02:51:06Z

5

When you use $str = $str * 1, $str will first cast into an integer then plus 1, so it is one step more.

Besides, $str = intval($str); is much more readable than $str = $str * 1;,

You could also just use casting by $str = (int)$str.

answered Sep 16, 2011 at 2:51

xdazz

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Comments

Ben Rowe · Accepted Answer · 2011-09-16 03:03:25Z

5

Casting the value using (int) should be the quickest option as intval() invokes a function (which has a small performance overhead)

$str = (int)$str;

answered Sep 16, 2011 at 3:03

Ben Rowe

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