PHP empty() Function, run and write PHP code.

PHP empty() Function - online editor.

The empty() function is an inbuilt function in PHP which is used to check if a variable is empty or not.

Syntax:
define(name,value,case_insensitive);

Example :
empty() - returns true if a variable is empty.

 <?php 

      // PHP empty() Function code to demonstrate working of empty()

      $evar1 = 0; 

      $evar2 = 0.0; 

      $evar3 = "0"; 

      $evar4 = NULL; 

      $evar5 = false; 

      $evar6 = array(); 

      $evar7 = ""; 

      $evar9 = 5; 

      echo "<pre>";

      // for value 0 as integer 

      echo "1. ";

      empty($evar1) ? print_r("True\n") : print_r("False\n"); 

  

      // for value 0.0 as float 

      echo "2. ";

      empty($evar2) ? print_r("True\n") : print_r("False\n"); 

  

      // for value 0 as string 

      echo "3. ";

      empty($evar3) ? print_r("True\n") : print_r("False\n"); 

  

      // for value Null 

      echo "4. ";

      empty($evar4) ? print_r("True\n") : print_r("False\n"); 

  

      // for value false 

      echo "5. ";

      empty($evar5) ? print_r("True\n") : print_r("False\n"); 

  

      // for array 

      echo "6. ";

      empty($evar6) ? print_r("True\n") : print_r("False\n"); 

  

      // for empty string 

      echo "7. ";

      empty($evar7) ? print_r("True\n") : print_r("False\n"); 

  

      // for not declare $evar8 

      echo "8. ";

      empty($evar8) ? print_r("True\n") : print_r("False\n");
    // for value 5 as integer, this not empty 

      echo "9. ";

      empty($evar9) ? print_r("True\n") : print_r("False\n"); 

      echo "</pre>";

      ?>

Tags:
PHP empty() Function 8

PHP empty() Function

PHP Functons

PHP count() Function

PHP define() function

PHP empty() Function

PHP explode() function

PHP html_entity_decode() function

PHP htmlentities() function

PHP htmlspecialchars_decode() function

PHP htmlspecialchars() function

PHP implode() function

PHP isset() Function

PHP lcfirst() function

PHP ltrim() function

PHP md5() function

PHP print() function

PHP printf() function

PHP rtrim() function

PHP similar_text() function

PHP str_repeat() function

PHP str_replace() function

PHP str_split() function

PHP strcmp() function

PHP strip_tags() function

PHP strlen online function

PHP strrchr() Function

PHP strstr() function

PHP strtolower() function

PHP strtoupper() function

PHP substr() function

PHP trim() function

PHP ucfirst() function