utf8_decode
(PHP 4, PHP 5, PHP 7, PHP 8)
utf8_decode — Converts a string from UTF-8 to ISO-8859-1, replacing invalid or unrepresentable characters
This function has been DEPRECATED as of PHP 8.2.0. Relying on this function is highly discouraged.
Description
$string): string
This function converts the string string from the
UTF-8 encoding to ISO-8859-1. Bytes
in the string which are not valid UTF-8, and
UTF-8 characters which do not exist in
ISO-8859-1 (that is, code points above
U+00FF) are replaced with ?.
Note:
Many web pages marked as using the
ISO-8859-1character encoding actually use the similarWindows-1252encoding, and web browsers will interpretISO-8859-1web pages asWindows-1252.Windows-1252features additional printable characters, such as the Euro sign (€) and curly quotes (“”), instead of certainISO-8859-1control characters. This function will not convert suchWindows-1252characters correctly. Use a different function ifWindows-1252conversion is required.
Parameters
-
string -
A UTF-8 encoded string.
Return Values
Returns the ISO-8859-1 translation of string.
Changelog
| Version | Description |
|---|---|
| 8.2.0 | This function has been deprecated. |
| 7.2.0 | This function has been moved from the XML extension to the core of PHP. In previous versions, it was only available if the XML extension was installed. |
Examples
Example #1 Basic examples
<?php
// Convert the string 'Zoë' from UTF-8 to ISO 8859-1
$utf8_string = "\x5A\x6F\xC3\xAB";
$iso8859_1_string = utf8_decode($utf8_string);
echo bin2hex($iso8859_1_string), "\n";
// Invalid UTF-8 sequences are replaced with '?'
$invalid_utf8_string = "\xC3";
$iso8859_1_string = utf8_decode($invalid_utf8_string);
var_dump($iso8859_1_string);
// Characters which don't exist in ISO 8859-1, such as
// '€' (Euro Sign) are also replaced with '?'
$utf8_string = "\xE2\x82\xAC";
$iso8859_1_string = utf8_decode($utf8_string);
var_dump($iso8859_1_string);
?>
The above example will output:
5a6feb string(1) "?" string(1) "?"
See Also
- utf8_encode() - Converts a string from ISO-8859-1 to UTF-8
- mb_convert_encoding() - Convert a string from one character encoding to another
- UConverter::transcode() - Convert a string from one character encoding to another
- iconv() - Convert a string from one character encoding to another
