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@ 2018-10-12T23:14:52Z

<?php

function toAlpha ($num) {
    return strtr($num, range("A", "Z"));
}
    
$string = toAlpha("138201162401719");
echo "$string\n";
$string = toAlpha("123456789012345");
echo "$string\n";
$string = toAlpha("101112131415161");
echo "$string\n";
$string = toAlpha("2625242322212019");
echo "$string";

Output
Performance
VLD
References
Branches

strtr: documentation ( source)
range: documentation ( source)

preferences:dark modelive previewkey bindings

105.06 ms | 2626 KiB | 5 Q