Question

How to find all non repeating characters in a string with PHP

Answer 1

function PrintAllNonRepeatedCharacter($str) {
    for ($i = 0; $i <= strlen($str) - 1; $i++) {
        if (substr_count($str, substr($str, $i, 1)) == 1) {
            echo substr($str, $i, 1) . "\n";
        }
    }
}
 
$str = "c c++ csharp java php python";
 
PrintAllNonRepeatedCharacter($str);
 
 
 
 
/*
run:
 
s
r
j
v
y
t
o
n
 
*/

 

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