W3Schools Tryit Editor

<!DOCTYPE html>
<html>
<body>

<?php
$num1 = 123456789;
$num2 = -123456789;
$char = 50; // The ASCII Character 50 is 2

// Note: The format value "%%" returns a percent sign
echo sprintf("%%b = %b",$num1)." "; // Binary number
echo sprintf("%%c = %c",$char)." "; // The ASCII Character
echo sprintf("%%d = %d",$num1)." "; // Signed decimal number
echo sprintf("%%d = %d",$num2)." "; // Signed decimal number
echo sprintf("%%e = %e",$num1)." "; // Scientific notation (lowercase)
echo sprintf("%%E = %E",$num1)." "; // Scientific notation (uppercase)
echo sprintf("%%u = %u",$num1)." "; // Unsigned decimal number (positive)
echo sprintf("%%u = %u",$num2)." "; // Unsigned decimal number (negative)
echo sprintf("%%f = %f",$num1)." "; // Floating-point number (ls aware)
echo sprintf("%%F = %F",$num1)." "; // Floating-point number (not aware) 
echo sprintf("%%g = %g",$num1)." "; // Shorter of %e and %f
echo sprintf("%%G = %G",$num1)." "; // Shorter of %E and %f
echo sprintf("%%o = %o",$num1)." "; // Octal number
echo sprintf("%%s = %s",$num1)." "; // String
echo sprintf("%%x = %x",$num1)." "; // Hexadecimal number (lowercase)
echo sprintf("%%X = %X",$num1)." "; // Hexadecimal number (uppercase)
echo sprintf("%%+d = %+d",$num1)." "; // Sign specifier (positive)
echo sprintf("%%+d = %+d",$num2)." "; // Sign specifier (negative)
?>

</body>
</html>

​x
 
<!DOCTYPE html><html><body>​<?php$num1 = 123456789;$num2 = -123456789;$char = 50; // The ASCII Character 50 is 2​// Note: The format value "%%" returns a percent signecho sprintf("%%b = %b",$num1)."<br>"; // Binary numberecho sprintf("%%c = %c",$char)."<br>"; // The ASCII Characterecho sprintf("%%d = %d",$num1)."<br>"; // Signed decimal numberecho sprintf("%%d = %d",$num2)."<br>"; // Signed decimal numberecho sprintf("%%e = %e",$num1)."<br>"; // Scientific notation (lowercase)echo sprintf("%%E = %E",$num1)."<br>"; // Scientific notation (uppercase)echo sprintf("%%u = %u",$num1)."<br>"; // Unsigned decimal number (positive)echo sprintf("%%u = %u",$num2)."<br>"; // Unsigned decimal number (negative)echo sprintf("%%f = %f",$num1)."<br>"; // Floating-point number (ls aware)echo sprintf("%%F = %F",$num1)."<br>"; // Floating-point number (not aware) echo sprintf("%%g = %g",$num1)."<br>"; // Shorter of %e and %fecho sprintf("%%G = %G",$num1)."<br>"; // Shorter of %E and %fecho sprintf("%%o = %o",$num1)."<br>"; // Octal numberecho sprintf("%%s = %s",$num1)."<br>"; // Stringecho sprintf("%%x = %x",$num1)."<br>"; // Hexadecimal number (lowercase)echo sprintf("%%X = %X",$num1)."<br>"; // Hexadecimal number (uppercase)echo sprintf("%%+d = %+d",$num1)."<br>"; // Sign specifier (positive)echo sprintf("%%+d = %+d",$num2)."<br>"; // Sign specifier (negative)?>​</body></html>​