(PHP 4 >= 4.0.5, PHP 5, PHP 7)
iconv — Convert string to requested character encoding
$in_charset
   , string $out_charset
   , string $str
   )
   Performs a character set conversion on the string
   str from in_charset
   to out_charset.
  
in_charsetThe input charset.
out_charsetThe output charset.
       If you append the string //TRANSLIT to
       out_charset transliteration is activated. This
       means that when a character can't be represented in the target charset,
       it can be approximated through one or several similarly looking
       characters. If you append the string //IGNORE,
       characters that cannot be represented in the target charset are silently
       discarded. Otherwise, E_NOTICE is generated and the function
	   will return FALSE.
      
strThe string to be converted.
   Returns the converted string or FALSE on failure.
  
| Version | Description | 
|---|---|
| 5.4.0 | Since this version, the function returns FALSEon illegal characters, 
			unless //IGNORE is specified in output charset. 
			Before, it returned partial output string. | 
Example #1 iconv() example
<?php
$text = "This is the Euro symbol '€'.";
echo 'Original : ', $text, PHP_EOL;
echo 'TRANSLIT : ', iconv("UTF-8", "ISO-8859-1//TRANSLIT", $text), PHP_EOL;
echo 'IGNORE   : ', iconv("UTF-8", "ISO-8859-1//IGNORE", $text), PHP_EOL;
echo 'Plain    : ', iconv("UTF-8", "ISO-8859-1", $text), PHP_EOL;
?>
The above example will output something similar to:
Original : This is the Euro symbol '€'. TRANSLIT : This is the Euro symbol 'EUR'. IGNORE : This is the Euro symbol ''. Plain : Notice: iconv(): Detected an illegal character in input string in .\iconv-example.php on line 7