How to convert php string to asc

How to convert php string to asc: First create a PHP sample file; then convert the characters through "$ch = 'A';$i = ord($ch);var_dump($i);" It can be ASCII code.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to convert php string to asc?

PHP - Conversion between ASCII code and characters

ASCII code to character:

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

Character to ASCII code:

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

int 65

Related introduction:

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

Syntax

ord(string)

Parameters

string Required. The string to obtain the ASCII value from.

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