To count the total number of characters  in the given string.

we will use count_chars() funtion

count_chars — Return information about characters used in a string

Return Values

Depending on mode count_chars() returns one of the following:

  • 0  – an array with the byte-value as key and the frequency of every byte as value.
  • 1 – same as 0  but only byte-values with a frequency greater than zero are listed.
  • 2 – same as 0 but only byte-values with a frequency equal to zero are listed.
  • 3 – a string containing all used byte-values cheapest is returned.
  • 4 – a string containing all not used byte-values is returned.
  1. <html>  
  2.  <body>  
  3. <?php
  4. $data = “Two Ts and one F.”;
  5. foreach (count_chars($data, 1) as $i => $val) {
  6. echo “There were $val instance(s) of \”” , chr($i) , “\” in the string.\n”;
  7. }
  8. ?>
  9.  </body>   
  10. </html>  

The above example will output:

There were 4 instance(s)  of " " in the string.
There were 1 instance(s) of "." in the string.
There were 1 instance(s) of "F" in the string.
There were 2 instance(s) of "T" in the string.
There were 1 instance(s) of "a" in the string.
There were 1 instance(s) of "d" in the string.
There were 1 instance(s) of "e" in the string.
There were 2 instance(s) of "n" in the string.
There were 2 instance(s) of "o" in the string.
There were 1 instance(s) of "s" in the string.
There were 1 instance(s) of "w" in the string.


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