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--- uphp:functions:is_array [2017/03/09 14:15]
jeff created
+++ uphp:functions:is_array [2021/09/13 05:57] (current)
@@ Line 1: / Line 1: @@
 ======is_array======
 <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
-Return 1 if the variable is an array
+Check if a variable is an <html><b><span style="color:green">array<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_array]]
+<well size="sm"><html>
-<html>(
+<span style="font-size:125%;color:green">int
-<span style="color:green;">mixed
+<span style="color:black">is_array (
-<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>
-Return 1 (true) if the variable is an array, otherwise return 0 (false)
+Check to see if a variable or value is of type <html><b><span style="color:green">array<span style="color:black"></b></html>
-====Parameters====
+====Parameter====
-<html><span style="color:blue;"><b>variable</b><span style="color:black;"></html>:  Variable or expression to be tested to see if it is an array
-====Return Value====
+<html><b><span style="color:blue">$variable<span style="color:black"></b></html>:  Variable or expression to be evaluated
-if array, 0 if not an array
+====Return Values====
+<html><b><span style="color:green">Integer<span style="color:black"></b>:  1 (true) if <b><span style="color:green">array<span style="color:black"></b>, 0 (false) if not an array</html>
+====Examples====
-====Example====
 <code php>
 <?
-$x=1;
+  $x=1;
-print(is_array($x)); //outputs 0
+  print(is_array($x)); // outputs 0
-$y=array("one");
+  $y=array("one");
-print(is_array($y)); //outputs 1
+  print(is_array($y)); // outputs 1
 ?>
 </code>
+====Notes====
+This function checks ONLY the type of the variable, not the data that it holds!
 ====See Also====
-[[is_int()]] - Return 1 if the variable is an integer
-[[is_float()]] - Return 1 if the variable is a float
+[[is_int()]] - Check if a variable is an <html><b><span style="color:green">integer<span style="color:black"></b></html>
+[[is_float()]] - Check if a variable is a <html><b><span style="color:green">float<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_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_numeric()]] - Return 1 if the value is numeric (integer, float or string)
+[[isset()]] - Check if a variable exists
 [[uphp:variables|uPHP Variable Types and Limits]]
-[[array()]] - Create an array with values
+[[array()]] - Create an <html><b><span style="color:green">array<span style="color:black"></b></html>, with optional values

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