Home/ Questions/Q 6155779
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-23T20:29:46+00:00

I have a variable $x whose value is read in from an XML file.

  • 0

I have a variable $x whose value is read in from an XML file. The value being read from the XML is 1.963788, nothing more, nothing less. When I output $x, I see that the value in $x is in fact 1.963788. All is right with the world.

But then when I use x in an equation such as

$pl = $x*125.0-200.0;

The value of $pl ends up being -75. For whatever reason, PHP seems to be ignoring, or just getting rid of, the digits to the right of the decimal point in $x, which makes $x contain 1. I thought maybe there was a snowball’s chance in hell that this occurred in other languages too, so I wrote it up in C++ and, big surprise, I get the right answer of 45.4735.

Anyone ever encountered this before or know what’s going on? Thanks.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Have you tried using floatval?
    Maybe PHP interprets your number as a string and the standard conversion just casts it to integer.

    • 0