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--- uphp:functions:is_float [2017/03/09 16:48]
jeff
+++ uphp:functions:is_float [2021/09/13 05:57] (current)
@@ Line 1: / Line 1: @@
 ======is_float======
 <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
-Return 1 if the variable is a float
+Check if a variable is a <html><b><span style="color:green">float<span style="color:black"></b></html>
 ====Description====
-<well size="sm"><html><span style="font-size:125%;color:green;">int
-<span style="color:black;"></html>[[is_float]]
+<well size="sm"><html>
-<html>(
+<span style="font-size:125%;color:green">int
-<span style="color:green;">mixed
+<span style="color:black">is_float (
-<span style="color:blue;">$variable
+<span style="color:green">mixed
-<span style="color:black;">)
+<span style="color:blue">$variable
+<span style="color:black">)
 </html></well>
-Check if a variable or value is a floating point number
+Check to see if a variable or value is of type <html><b><span style="color:green">float</b></html> (a floating point number)
-====Parameters====
+====Parameter====
-<html><span style="color:blue;"><b>variable</b><span style="color:black;"></html>:  Variable or expression to be evaluated
-====Return Value====
+<html><b><span style="color:blue">$variable<span style="color:black"></b></html>:  Variable or expression to be evaluated
-(true) if float, 0 (false) if not a float
+====Return Values====
+<html><b><span style="color:green">Integer<span style="color:black"></b></html>:  1 (true) if <html><b><span style="color:green">float<span style="color:black"></b></html>, 0 (false) if not a float
 ====Examples====
 <code php>
 <?
-$x=1;
+  $x=1;
-print(is_float($x)); //outputs 0, $x is an integer
+  print(is_float($x)); // outputs 0, $x is an integer
-$y=1.0;
+  $y=1.0;
-print(is_float($y)); //outputs 1, $y is a float
+  print(is_float($y)); // outputs 1, $y is a float
-$z="1.0";
+  $z="1.0";
-print(is_float($z)); //outputs 0, $z is a string
+  print(is_float($z)); // outputs 0, $z is a string
 ?>
 </code>
-====Note====
+====Notes====
-To test if a variable is a number or a numeric string (such as form input, which is always a string), you should use [[is_numeric()]].
+This function checks ONLY the type of the variable, not the data that it holds!
+To test if a variable contains a number or is a numeric string (such as form input, which is always a string), you should use [[is_numeric()]].
 ====See Also====
-[[is_int()]] - Return 1 if the variable is an integer
-[[is_numeric()]] - Return 1 if the value is numeric (integer, float or string)
+[[is_int()]] - Check if a variable is an <html><b><span style="color:green">integer<span style="color:black"></b></html>
+[[is_numeric()]] - <html>Check if a value is numeric (<b><span style="color:green">int<span style="color:black"></b>, <b><span style="color:green">float<span style="color:black"></b> or numeric <b><span style="color:green">string<span style="color:black"></b>)</html>
+[[is_string()]] - Check if a variable is a <html><b><span style="color:green">string<span style="color:black"></b></html>
-[[is_string()]] - Return 1 if the variable is a string
+[[is_array()]] - Check if a variable is an <html><b><span style="color:green">array<span style="color:black"></b></html>
-[[is_array()]] - Return 1 if the variable is an array
+[[isset()]] - Check if a variable exists
 [[uphp:variables|uPHP Variable Types and Limits]]

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