Palindrome Number in PHP

Write a Program to Check Palindrome Number in PHP.

Method 1

function check_palindrome($number_input){
    $check_number = $number_input;
    $sum = 0;
    while(floor($number_input)){
       $reminder = $number_input%10;
       $sum = $sum *10+$reminder;
       $number_input = $number_input/10;
   }
    return ($check_number == $sum)? TRUE : FALSE;
 }
 $input_number = 1221; 
 if(check_palindrome($input_number)){
    echo "Yes Palindrome Number";
 }else{
    echo "No Palindrome Number";
 }
// Yes Palindrome Number

Method 2

function check_palindrome($number){
   $string = (String)$number; // Convert to String
   $string_array = str_split($string); //Split into Array
   $reverse_array = array_reverse($string_array); // Reverse Array
   $reverse_string = implode('',$reverse_array); // Recombine Array to String
   return ($string == $reverse_string)? TRUE : FALSE; //Return True & False
}
 
 $input_number = 121; 
 if(check_palindrome($input_number)){
    echo "Yes Palindrome Number";
 }else{
    echo "No Palindrome Number";
 }
//Yes Palindrome Number

Method 3

function check_palindrome($number){
   $string = (String)$number; // Convert to String
   $reverse_string = strrev($string); // Reverse the String
   return ($string == $reverse_string)? TRUE : FALSE; //Return True & False
}
 
 $input_number = 121; 
 if(check_palindrome($input_number)){
    echo "Yes Palindrome Number";
 }else{
    echo "No Palindrome Number";
 }
 // Yes Palindrome Number

Method 4

 function check_palindrome($number){
   $string = (String)$number;
   $reverse_string=""; 
   $string_length = strlen($string); // Used to find String word length.   
   for($i=($string_length-1);$i>=0;$i--){
      $reverse_string .= $string[$i]; 
   } 
   return ($string == $reverse_string)? TRUE : FALSE; //Return True & False
 }
 
 $input_number = 1221; 
 if(check_palindrome($input_number)){
    echo "Yes Palindrome Number";
 }else{
    echo "No Palindrome Number";
 }
 // Yes Palindrome Number

Live Check Palindrome Number

Demo Page