<?php
 $sampleData = array('10', '20', '30.30', '40', '50');
 array_shift($sampleData);
 array_pop($sampleData);
 print_r($sampleData); // Array ( [0] => 20 [1] => 30.30 [2] => 40 )
?>

<?php
 $sampleDate = array("Test1", "Test2", "Test3", "Test4");
 array_shift($sampleDate);
 print_r($sampleDate); // Array ( [0] => Test2 [1] => Test3 [2] => Test4 ) .
 // Test1 will be shifted
?>

<?php
 $sampleDate = array("Test1", "Test2", "Test3", "Test4");
 array_pop($sampleDate);
 print_r($sampleDate); // Array ( [0] => Test1 [1] => Test2 [2] => Test3 ) .
 // Test4 will be removed
?>

<?php 

$name 	=	"Hello Name";	

$name =str_replace("Name", "First Name", $name);

echo $name;  // Hello First Name 

?>

<?php
 echo ucwords("hello name"); // Hello Name
?>

<?php
 echo ucfirst("name"); //Name
?>

<?php
 echo strtoupper("name"); // Name
?>

<?php
 echo strtolower("FIRST NAME") //first name
?>