Convert a string to a double - is this possible

Question

Just wondering in php  if it was possible to convert a string to a double  I am using a financial web service which provides a price as a string  I really need to process this as a double and was wondering how i would convert it  thanks

User · Answer

Use doubleval    But be very careful about using decimals in financial transactions  and validate that user input very carefully

User · Answer

For arbitrary precision mathematics PHP offers the Binary Calculator which supports numbers of any size and precision  represented as strings     s    1234 13    double   bcadd  s  0  2     PHP  bcadd

User · Answer

Why is floatval the best option for financial comparison data  bc functions only accurately turn strings into real numbers

User · Answer

Just use floatval     E g     var    122 34343    float value of var   floatval  var   echo  float value of var     122 34343   And in case you wonder doubleval   is just an alias for floatval     And as the other say  in a financial application  float values are critical as these are not precise enough  E g  adding two floats could result in something like 12 30000000001 and this error could propagate

[php] Convert a string to a double - is this possible?

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