PHP array Complete example code

// Creating an array
$colorList = array("apple"=>"red",
"grass"=>"green",
"sky"=>"blue",
"night"=>"black",
 
"wall"=>"white");
 
 
//Display array item
 
echo "The sky is ".$colorList["sky"]
 
." and the grass is ".$colorList["grass"];
 
 
 
// Display array size
 
echo "The array size is: ".sizeof($colorList);
 
 
// Remove one element from the array
 
unset($colorList["sky"]);
 
echo "The new array size is: ".sizeof($colorList);
 
 
echo "";
 
 
// Check the existence of an element
 
if (isset($colorList["grass"])) echo "grass key is present";
 
else echo "grass key is not present";
 
 
if (isset($colorList["sky"])) echo "sky key is present";
 
else echo "sky key is not present";
 
 
// Display the complete array content
 
echo "Array before sorting:";
 
print_r($colorList);
 
// Display the complete array content after sorting
 
echo "Array after asort:";
 
print_r (asort($colorList));
 
echo "Array after sort:";
 
print_r (sort($colorList));
 
 
 
// Creating a multidimensional array
 
$myLists['colors'] = array("apple"=>"red",
 
"grass"=>"green",
 
"sky"=>"blue",
 
"night"=>"black",
 
"wall"=>"white");
 
 
$myLists['cars'] = array("BMW"=>"M6",
 
"Mercedes"=>"E 270 CDI",
 
"Lexus"=>"IS 220d",
 
"Mazda"=>"6",
 
"Toyota"=>"Avensis");
 
 
// Display an item from the array
 
echo "A demo item is:".$myLists['cars']['Toyota'];
 
 
// Create a new array
 
$colorList2[] = "red";
 
$colorList2[] = "green";
 
$colorList2[] = "blue";
 
$colorList2[] = "black";
 
$colorList2[] = "white";
 
 
// DUmp it's content
 
echo "Dump colorList2 with print_r:<br/>";
 
print_r($colorList2);
 
echo "Dump colorList2 with var_dump:<br/>";
 
var_dump($colorList2);
 
echo "";
 
 
// Display array elements from loop
 
echo "Array content:<br/>";
 
for ($i=0;$i<=4;$i++){
 
echo $colorList2[$i]."";
 
}
 
 
// Display array elements with foreach
 
echo "Array content:";
 
foreach ($colorList2 as $value) {
 
echo $value."<br/>";
 
}