Question

How to check if a string is rotation of another string in PHP

Answer 1

function isRotation($s1, $s2) { 
        return (strlen($s1) == strlen($s2) && (strpos($s1.$s1, $s2) !== false)); 
} 
  

$s1 = "abbc"; 
$s2 = "cabb"; 

echo isRotation($s1, $s2) ? "yes" : "no";

echo "<br />";
        
$s1 = "abbc"; 
$s2 = "bbac"; 
  
echo isRotation($s1, $s2) ? "yes" : "no";

    
 
      
      
/*
run:
      
yes
no
       
*/

 

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