PHP chr() Function

The PHP chr() function is used to generate a single byte string from a number. In another words we can say that it returns a character from specified ASCII value.

Syntax:


string chr ( int $bytevalue );
Parameter Description Required/Optional
ascii An ASCII value Required

Example 1


<?php  
$char =52;  
echo "Your character is :".$char;  
echo "<br>"."By using 'chr()' function your value is: ".chr($char);//  decimal Value  
?>

Output

Your character is :52 By using 'chr()' function your value is: 4

Example 2


<?php 
$char =052;  
echo "Your character is :".$char;  
echo "<br>"."By using 'chr()' function your value is: ".chr($char); // Octal Value
?>

Output

Your character is :42 By using 'chr()' function your value is: *

Example 3


<?php  
echo "Your character is :0x52";  
echo "<br>"."By using 'chr()' function your value is: ".chr(0x52); // Hex value  
>?

Output

Your character is :0x52 By using 'chr()' function your value is: R

Example 4


<?php  
$str = chr(43);  // +  
$str2 = chr(61); // =  
echo("2 $str 2 $str2 4");   
>?

Output

2 + 2 = 4

Given above program in which the ASCII value of chr(43) is '+' and chr(61) is '=' converted .