PHP | utf8_decode() Function

The utf8_decode() function is an inbuilt function in PHP which is used to decode a UTF-8 string to the ISO-8859-1. This function decodes back to the encoded string which is encoded with the utf8_encode() function.

Syntax:

string utf8_decode( string $string )

Parameter: This function accepts single parameter $string which is required. It specifies the UTF-8 encoded string to be decoded.



Return Value: This function returns a string representing the decoded string on success and false on failure.

Note: This function is available for PHP 4.0.0 and newer version.

Program 1:

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<?php
  
// String to decode
$string_to_decode = "\x63";
  
// Encoding string
echo utf8_encode($string_to_decode) ."<br>";
  
// Eecoding string
echo utf8_decode($string_to_decode);
  
?>

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Output:

c
c

Program 2:

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<?php
  
// Creating an array of 256 elements
$text = array(
    "\x20", "\x21", "\x22", "\x23", "\x24", "\x25",
    "\x26", "\x27", "\x28", "\x29", "\x2a", "\x2b",
    "\x2c", "\x2d", "\x2e", "\x2f", "\x30", "\x31"
);
  
echo "Encoded elements:\n";
  
// Encoding and decoding all elements
foreach( $text as $index ) {
    echo utf8_encode($index) . " ";
}
  
echo "\nDecoded elements:\n";
  
foreach( $text as $index ) {
    echo utf8_decode($index) . " "
}
  
?>

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Output:

Encoded elements:
  ! " # $ % & ' ( ) * + , - . / 0 1 
Decoded elements:
  ! " # $ % & ' ( ) * + , - . / 0 1 

Reference: https://www.php.net/manual/en/function.utf8-decode.php




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