count_chars - Count Number of character of string with PHP

mixed count_chars ( string $string [, int $mode = 0 ] )

Return information about characters used in a string

Mode value can have 0-5 and return following results

1. 0 - Return an array with the byte-value as key and the frequency of every byte as value.
2. 1 - same as 0 but only byte-values with a frequency greater than zero are listed.
3. 2 - same as 0 but only byte-values with a frequency equal to zero are listed.
4. 3 - a string containing all unique characters is returned.
5. 4 - a string containing all not used characters is returned.

Counts the number of occurrences of every byte-value (0..255) in string and returns it in various ways.


<?php
$data = "Two Ts and one F.";

foreach (count_chars($data, 1) as $i => $val) {
   echo "There were $val instance(s) of \"" , chr($i) , "\" in the string.\n";
}?>

065 PHP من الألف إلى الياء Arabic التعامل مع النصوص Strings pt1

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