isfloat - Checks if the argument is a float number.
isfloat(variable);
This function is used to determine if the argument is a float number.
A float number start with an optional + or - followed by an optional number followed by a dot '.' followed by 0 or more numbers.
isinteger("a56"); isfloat("45.65"); isfloat(".65"); isfloat("4."); isfloat("4"); isfloat("+4.."); isfloat("+."); isfloat("."); isfloat(""); isinteger(""); return res=falsefalsetruetruetruetruefalsefalsefalsefalsefalse.
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Written by Pierre Laplante and Caroline Laplante, <laplante@sednove.com>
1.0 2015-03-08 21:24:14 laplante@sednove.com
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