CODEWITHSUNDEEP
phpmath
Yoshiyahu
Yoshiyahu

Reputation: 2158

Function to count decimal places with PHP

Is there a native PHP function which tells me how many decimal places a number has, or will I have to make my own?

IE:
0.8 -> 1
0.2345 -> 4
0.894 -> 3

Upvotes: 3

Views: 1285

Answers (2)

Amber
Amber

Reputation: 526803

You'll have to make your own if you really want that function. It shouldn't be all that hard, though - just convert to a string, explode() on the ., and then take the length of the second element in the array.

Beware of floating point inaccuracy, though.

Upvotes: 5

Ned Batchelder
Ned Batchelder

Reputation: 375674

Floating point numbers are stored in binary, they don't "have" any number of decimal places. They are converted to decimal representation as part of printing them. How many places are printed depends on the formatting function used to print them.

Upvotes: 0

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