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PHP String Functions
Array Functions
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• Mysql Functions(php4)
• Mysql Functions(php5+)
Some Special Functions

  	
			<?php
				$yes = array('this', 'is', 'an array');
				echo is_array($yes) ? 'Array' : 'not an Array'; echo '';
				$no = 'this is a string';
				echo '
';
				echo is_array($no) ? 'Array' : 'not an Array';
			?>
	

  	
			<?php
				$array1 = array("a" => "green", "red", "blue", "red");
				$array2 = array("b" => "green", "yellow", "red");
				$result = array_diff($array1, $array2);
				print_r($result);
			?>
	

  	
			<?php
				$trans = array("a" => 12, "b" => 23, "c" => 34);
				$trans = array_flip($trans);
				print_r($trans);
			?>
	

  	
			<?php
				$search_array = array('first' => 1, 'second' => 4);
					if (array_key_exists('first', $search_array)) {
					echo "The 'first' element is in the array";
					}
			?>
	

  	
			<?php
				$array = array(0 => 80, "color" => "red");
				print_r(array_keys($array));
				echo '
';
				$array = array("blue", "red", "green", "blue", "blue");
				print_r(array_keys($array, "blue"));
			?>
	

  	
			<?php
				$array1 = array("color" => "red", 2, 4);
				$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
				$result = array_merge($array1, $array2);
				print_r($result);
			?>
	

  	
			<?php
				$input = array(12, 10, 9);
				$result = array_pad($input, 5, 0);
				print_r($result);
				echo '
';
				// result is array(12, 10, 9, 0, 0)
				$result = array_pad($input, -7, -1);
				print_r($result);
				echo '
';
				// result is array(-1, -1, -1, -1, 12, 10, 9)
				$result = array_pad($input, 2, "noop");
				print_r($result);
				// not padded
			?>
	

  	
			<?php
				$input = array("abhijit", "susanta", "sushil", "biswa");
				$rand_keys = array_rand($input, 2);
				echo $input[$rand_keys[0]] . "\n";
				echo $input[$rand_keys[1]] . "\n";
			?>
	

  	
			<?php
				$input = array("php", 4.0, array("green", "red"));
				$result = array_reverse($input);
				$result_keyed = array_reverse($input, true);
				print_r($result);
				print_r($result_keyed);
			?>
	

  	
			<?php
				$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');
				$key1 = array_search('green', $array); // $key = 2;
				print $key1;
				echo "
";
				$key2 = array_search('red', $array); // $key = 1;
				print $key2;
			?>
	

  	
			<?php
				$input = array("a", "b", "c", "d", "e");
				$output = array_slice($input, 2); // returns "c", "d", and "e"
				$output = array_slice($input, -2, 1); // returns "d"
				$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
				// note the differences in the array keys
				print_r(array_slice($input, 2, -1));
				print_r(array_slice($input, 2, -1, true));
			?>
	

  	
			<?php
				$a = array(2, 4, 6, 8);
				echo "sum(a) = " . array_sum($a);
			?>
	

  	
			<?php
				$input = array("a" => "green", "red", "b" => "green", "blue", "red");
				$result = array_unique($input);
				print_r($result);
			?>
	

  	
			<?php
				$array = array("size" => "XL", "color" => "gold");
				print_r(array_values($array));
			?>
	

  	
			<?php
				$a = array('green', 'red', 'yellow');
				$b = array('avocado', 'apple', 'banana');
				$c = array_combine($a, $b);
				print_r($c);
			?>
	

  	
			<?php
				$fruits = array("lemon", "orange", "banana", "apple");
				sort($fruits);
				foreach ($fruits as $key => $val) {
				echo "fruits[" . $key . "] = " . $val . "\n";
				}
			?>
	

  	
			<?php
				$a[0] = 1;
				$a[1] = 3;
				$a[2] = 5;
				$result = count($a);
				print "result=".$result;
				// $result == 3

				$b[0] = 7;
				$b[5] = 9;
				$b[10] = 11;
				$result = count($b);
				print "result=".$result;
				// $result == 3

				$result = count(null);
				print "result=".$result;
				// $result == 0

				$result = count(false);
				print "result=".$result;
				// $result == 1
				}
			?>
	

  	
			<?php
				$stack = array("orange", "banana", "apple", "raspberry");
				$fruit = array_pop($stack);
				print_r($stack);
			?>
	

  	
			<?php
				$stack = array("orange", "banana");
				array_push($stack, "apple", "raspberry");
				print_r($stack);
			?>
	

  	
			<?php
				$stack = array("orange", "banana", "apple", "raspberry");
				$fruit = array_shift($stack);
				print_r($stack);
			?>
	

  	
			<?php
				$queue = array("orange", "banana");
				array_unshift($queue, "apple", "raspberry");
				print_r($queue);
			?>
	

  	
			<?php
				function cube($n)
						{
					return($n * $n * $n);
					}
					$a = array(1, 2, 3, 4, 5);
					$b = array_map("cube", $a);
					print_r($b);
			?>
	

  	
<?php
	$array = array(1,2,3,4,5);
	class test {
public $classarray;
public function adding($data) {
$this->classarray = array_map(array('test','dash'), $data);  //test is  the class name	
}
public function dash($item) {
$item2 = $item+2;
return $item2;
}

}
$test = new test();
$test->adding($array);
print_r($test->classarray);
?>
	

  	
			<?php
				$a = array('1.10', 12.4, 1.13);
				if (in_array('12.4', $a, true)) {
				echo "'12.4' found with strict check\n";
				}
				if (in_array(1.13, $a, true)) {
				echo "1.13 found with strict check\n";
				}
			?>
	

  	
			<?php
				$myArray = array(1,1,5,1,2,2,2,2,3,3,4,2,5,1,3,5,3,1,5);
				$myArrayCount = array_count_values($myArray);
				foreach($myArrayCount as $key=>$value)
				echo $key." exists ".$value." times";
			?>
	

  	
			<?php
				foreach (range(0, 12) as $number) {
					echo $number.' ';
					}
			?>
	

  	
			<?php
				$myArray = array("banana","apple","pear","banana");
				print_r($myArray);
				unset($myArray[1]);
				echo "
After unset:
";
				print_r($myArray);
			?>