casting - Typecasting vs function to convert variable type in PHP -


is there difference between typecasting , using function convert variable type?

(float)$var vs. floatval($var)

if there are, when 1 of should used instead of other?

there's no difference in resulting value, just:

  • (float) language feature , quick
  • floatval() incurs overhead of function call (minimal, nonetheless...)
  • floatval() function can used in ways (float) cannot, e.g. array_map('floatval', $foo)

the last point is, believe, main reason floatval's existence: each casting operation has function equivalent, can useful in circumstances.


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