Max quetion

[peter11]

Why is this not correct?

 

<?php
$newphrase = 1234567;
echo (max($newphrase));
?>

[JonnoTheDev]

Because the function max() takes an array, or series of values as its parameter, not a string.

i.e

echo max(1,2,3,4);
echo max(array(1,2,3,4));

[peter11]

how can i show the highest number in the string?

[newbtophp]

how can i show the highest number in the string?

 

<?php
$newphrase = 1234567;
preg_match_all('~\d{1}~', $newphrase, $a);

echo max($a[0]);
?>

[JonnoTheDev]

<?php
$newphrase = 1234567;
echo max(str_split($newphrase));
?>