chr
Returns a one-character string containing the character specified by interpreting codepoint as an unsigned integer.
This can be used to create a one-character string in a single-byte encoding such as ASCII, ISO-8859, or Windows 1252, by passing the position of a desired character in the encoding's mapping table. However, note that this function is not aware of any string encoding, and in particular cannot be passed a Unicode code point value to generate a string in a multibyte encoding like UTF-8 or UTF-16.
This function complements ord.
Parameters
- codepoint
-
An integer between 0 and 255.
Values outside the valid range (0..255) will be bitwise and'ed with 255, which is equivalent to the following algorithm:
while ($bytevalue < 0) {
$bytevalue += 256;
}
$bytevalue %= 256;
Return Values
A single-character string containing the specified byte.
Changelog
| Version | Description |
| 7.4.0 | The function no longer silently accepts unsupported codepoints, and casts these to 0. |