PHP function Exercises: Checks if a string is all lower case

PHP function: Exercise-5 with Solution

Write a PHP function that checks if a string is all lower case.

Pictorial Presentation:

Sample Solution:

PHP Code:

<?php
function is_str_lowercase($str1)
   {
    for ($sc = 0; $sc < strlen($str1); $sc++) {
	      if (ord($str1[$sc]) >= ord('A') &&
          ord($str1[$sc]) <= ord('Z')) {
      return false;
         }
         }
      return true;
       }
var_dump(is_str_lowercase('abc def ghi'));
var_dump(is_str_lowercase('abc dEf ghi'));
?>

Sample Output:

bool(true)                                                  
bool(false)

Flowchart :

PHP Code Editor:

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