jquery - How to replace string with cross after 2 characters of a string in php?

Solution:

You could use this function:

function obfuscate($data) {
    // for email addresses: do not obfuscate beyond at symbol
    $clear = strpos($data, "@");
    // for non-emails addresses: keep last two characters clear
    if ($clear === false) $clear = max(0, strlen($data)-2);
    // start hiding from 3rd character onwards, or earlier in some exceptional cases:
    $hide = max(0, min($clear-1, 3));
    return substr($data, 0, $hide) .
           str_repeat("x", $clear - $hide) . 
           substr($data, $clear);
}

echo obfuscate("[email protected]"); // [email protected]
echo obfuscate("9000000001");         // 900xxxxx01
Copy code

There are some safeguards (using min and max functions) in the code for not producing bad results in extreme cases, like when the email is very short "[email protected]" or the number only has 3 digits.

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