PHP chr() Function
The chr() function is used to get a single character string from the specified ASCII value.
Return values: A one-character string containing the character specified by ascii _code
Example
<?php
echo chr(52) . "<br>"; // Decimal value
echo chr(052) . "<br>"; // Octal value
echo chr(0x52) . "<br>"; // Hex value
?>
Outout
4
*
R
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