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--- uphp:functions:array_keys [2017/02/28 13:34]
jeff
+++ uphp:functions:array_keys [2021/09/13 05:57] (current)
@@ Line 1: / Line 1: @@
 ======array_keys======
 <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
-Return keys for an array that has key/value pairs
+Return keys for an <html><b><span style="color:green">array<span style="color:black"></b></html> that has key/value pairs
 ====Description====
-<well size="sm"><html><span style="font-size:125%;color:green;">array
-<span style="color:black;"></html>[[array_keys]]
+<well size="sm"><html>
-<html>(
+<span style="font-size:125%;color:green">array
-<span style="color:green;">array
+<span style="color:black">array_keys (
-<span style="color:blue;">$array
+<span style="color:green">array
-<span style="color:black;">)
+<span style="color:blue">$array
+<span style="color:black">)
 </html></well>
-Return an array object
-====Parameters====
+Return an <html><b><span style="color:green">array<span style="color:black"></b></html> object
-An <html><span style="color:blue;"><b>array</b><span style="color:black;"></html> with key/value pairs
-====Return Value====
+====Parameter====
-An array of keys
+<html><b><span style="color:blue">$array<span style="color:black"></b>: An <b><span style="color:green">array<span style="color:black"></b> with key/value pairs</html>
+====Return Values====
+An <html><b><span style="color:green">array<span style="color:black"></b></html> of keys
 ====Example====
-<code php><?
-$arr=array();
-$arr['name']="John";
-$arr['age']=30;
-$arr['status']=1;
-$keys=array_keys($arr);
-print_r($keys);
-/* output will be:
+<code php>
-p0 = ARRAY
+<pre><?
-STRING 0 => name
+  $arr=array();
-STRING 1 => age
+  $arr['name']="John";
-STRING 2 => status
+  $arr['age']=30;
-*/
+  $arr['status']=1;
-?></code>
+  $keys=array_keys($arr);
+  print_r($keys);
+?></pre>
+</code>
+The above example will output:
+<code>
+[$keys] = Array (
+(string) [0] => name
+(string) [1] => age
+(string) [2] => status
+)
+</code>
 ====See Also====
-[[array()]] - Create an array with values
-[[array_key()]] - Return the key for an array index
+[[array()]] - Create an <html><b><span style="color:green">array<span style="color:black"></b></html>, with optional values
+[[array_key()]] - Return the key for an <html><b><span style="color:green">array<span style="color:black"></b></html> index
-[[sizeof()]] - Return the number of elements in an array
+[[sizeof()]] - Return the number of elements in an <html><b><span style="color:green">array<span style="color:black"></b></html>
-[[print_r()]] - Dump the contents of an array to the current output
+[[print_r()]] - Dump the contents of an <html><b><span style="color:green">array<span style="color:black"></b></html> to the current output
 [[uphp:variables|uPHP Variable Types and Limits]]

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