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PHP chunk_split() Function

PHP chr() Function

Last Updated : 21 Jun, 2023

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The chr() function is a built-in function in PHP and is used to convert a ASCII value to a character. It accepts an ASCII value as a parameter and returns a string representing a character from the specified ASCII value. The ASCII value can be specified in decimal, octal, or hex values.

Octal values are defined by a leading 0.
Hex values are defined by a leading 0x.

The ASCII values table can be referred from here.

Syntax:

string chr( $asciiVal)

Parameter: This function accepts a single parameter $asciiVal. This parameter contains a valid ASCII value. The chr() function returns the corresponding character of the ASCII value we pass to it as the parameter $asciiVal.

Return Value: The function returns the character whose ASCII value we pass.

Examples:

  Input :  ASCII=35 ASCII=043 ASCII=0x23  Output : # # #   Explanation: The decimal, octal and hex value of '#' is   35, 043 and 0x23 respectively    Input : ASCII=48   Output : 0

Below programs illustrate the chr() function in PHP:

Program 1: Program to demonstrate the chr() function when different ASCII are passed but their equivalent character is same.

   <?php 
// PHP program to demonstrate the chr() function 
  
$n1 = 35; 
$n2 = 043; 
$n3 = 0x23; 
  
echo "The equivalent character for ASCII 35 in decimal is "; 
echo chr($n1), "\n";// Decimal value 
  
echo "The equivalent character for ASCII 043 in octal is "; 
echo chr($n2), "\n"; // Octal value 
  
echo "The equivalent character for ASCII 0x23 in hex is "; 
echo chr($n3); // Hex value 
  
?> 
 
  

Output:

  The equivalent character for ASCII 35 in decimal is #  The equivalent character for ASCII 043 in octal is #  The equivalent character for ASCII 0x23 in hex is #

Program 2: Program to demonstrate the chr() function using arrays.

   <?php 
// PHP program to demonstrate the chr() function 
// in array  
  
$a=[48, 49, 50];  
foreach($a as $i) 
{ 
    echo "The character equivalent of  
                 ASCII value of ", $i, " is "; 
    echo chr($i), "\n"; 
} 
  
?> 
 
  

Output:

  The character equivalent of ASCII value of 48 is 0  The character equivalent of ASCII value of 49 is 1  The character equivalent of ASCII value of 50 is 2

PHP chunk_split() Function

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Article Tags :

PHP
Web Technologies
PHP-function

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