<?php
 $testArray = array(2.4, 2.6, 3.5);
 print_r(array_map('ceil', $testArray));
 // Array ( [0] => 3 [1] => 3 [2] => 4 )

 $testArray = array(2.4, 2.6, 3.5);
 print_r(array_map('floor', $testArray));
 // Array ( [0] => 2 [1] => 2 [2] => 3 )
?>

<?php
 $array = array('this', 'is', 'an array');
 echo is_array($array) ? 'True' : 'False'; // True
 echo "  ";
 $var = 'this is a string';
 echo is_array($no) ? 'True' : 'False'; // False
?>

<?php
 $testString = "FirstName,MiddleName,LastName";
 $testArray	 = split(",",$testString);
 print_r($testArray);
 //Array ( [0] => FirstName [1] => MiddleName [2] => LastName )
?>
<?php
 $testString = "FirstName MiddleName,LastName";
 list($first, $middle, $last) = split('[  ,]', $testString);
 echo "First Name: $first; MiddleName: $middle; LastName: $last";
?>

<?php
 $testArray = array(1 => 5, "name" => "First Name");
 print_r(array_keys($testArray));
 //Array ( [0] => 1 [1] => name )
?>

$numbers = range(0, 9);
shuffle($numbers);
foreach ($numbers as $number) {
 echo $number;
}

<?php
 $numbers = range(0, 9);
 foreach($numbers as $value)
   echo $value." ";
//Will output  0 1 2 3 4 5 6 7 8  9
?>

<?php
 $numbers = range(0, 9);
 foreach($numbers as $value)
   echo $value." ";
//Will output  0 1 2 3 4 5 6 7 8  9
?>

<?php
 $testData= array('Test1', 'Test2', 'Test3');
 print_r(array_reverse($testData)); 
 //Array ( [0] => Test3 [1] => Test2 [2] => Test1 )
?>

<?php
 $testData= array('Test1', 'Test2', 'Test3');
 echo end($testData); // Test3
?>

<?php
// Example 1
$testValues  = "test1 test2 test3 test4 test5";
$testArray = explode(" ", $testValues);
print_r($testArray);
//Array ( [0] => test1 [1] => test2 [2] => test3 [3] => test4 [4] => test5 )

// Example 2
$testValues  = "test1,test2,test3,test4,test5";
$testArray = explode(",", $testValues);
print_r($testArray);
//Array ( [0] => test1 [1] => test2 [2] => test3 [3] => test4 [4] => test5 )
?>