ord 


string apg

CONVERT the first byte of a string to a value between 0 and 255.





This function interprets the binary value of the first byte of $string as an unsigned integer between 0 and 255.

If the $string is in a single-byte encoding, such as ASCII, ISO-8859, or Windows 1252, this is equivalent to returning the position of a character in the character set's mapping table.

However, note that this function is not aware of any $string encoding, and in particular will never identify a Unicode code point in a multi-byte encoding such as UTF-8 or UTF-16.

This function complements chr.



<?php

int ord ( str $string )


where,

$string = A character 

?> 

$string


The STRING to get the length.



  1 EXERCISE   

<?php

$strord01 = 'I';

$ord01 = ord($strord01);

echo $ord01;

?>

 RESULT   

The ord character of "I" is 73.

  2 EXERCISE   

<?php

$strord02 = 'Independece';

$ord02 = ord($strord02);

echo $ord02;

?>

  3 EXERCISE   

<?php

$strord03 = 'Ã';

$ord03 = ord($strord03);

echo $ord03;

?>

  4 EXERCISE   

<?php

echo "Testing ord() : basic functionality:<br><br><br>";

var_dump(ord("a"));
echo '<br><br>';
var_dump(ord("z"));
echo '<br><br>';
var_dump(ord("0"));
echo '<br><br>';
var_dump(ord("9"));
echo '<br><br>';
var_dump(ord("!"));
echo '<br><br>';
var_dump(ord("*"));
echo '<br><br>';
var_dump(ord("@"));
echo '<br><br>';
var_dump(ord("\n"));
echo '<br><br>';
var_dump(ord("\x0A"));
echo '<br><br>';
var_dump(ord("\xFF"));
echo '<br><br>';
var_dump(ord("Hello"));

// Make sure all valid ascii chars round trip
for ($i = 0; $i < 255; $i++) {
    if (ord(chr($i)) != $i) {
        exit("TEST FAILED: $i does not round trip<br>");
    }
}