How to convert php ascii code

php ASCII code conversion method: 1. Use the chr function to return characters from the specified ASCII value; 2. Use the ord function to return the ASCII value of the first character in the string.

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PHP Conversion between ASCII codes and characters

ASCII code conversion character:

<?php
$i = 65;
$ch = chr($i);
var_dump($ch);
?>
string &#39;A&#39; (length=1)

chr() function returns characters from the specified ASCII value.

ASCII values ​​can be specified as decimal, octal, or hexadecimal values. Octal values ​​are defined with leading 0, and hexadecimal values ​​are defined with leading 0x.

Character conversion to ASCII code:

<?php
$ch = &#39;A&#39;;
$i = ord($ch);
var_dump($i);
?>
int 65

ord() function returns the ASCII value of the first character in the string.

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