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count_chars ( ) - Count character occurences of each byte value
The count_chars() string function in PHP is a means for finding how many times a character or space occurs in a string. It also returns different results and changes functionality by changing the mode number(0 - 4). 

Here is a quick explanation what each mode returns:

0 - an array with the byte-values as keys and the character occurrence number as value
1 - an array with the byte-values as keys where the character occurrence number is greater than zero
2 - an array with the byte-values as keys where the character occurrence number is equal to zero
3 - all unique characters
4 - all characters not occurring in the string

Learn HTML
$strArray count_chars($myString1);
foreach (
$strArray as $key => $value) {
"<strong>'".chr($key)."'</strong> is found $value time(s)<br />";

Develop PHP browser display window
'.' is found 2 time(s)
'c' is found 1 time(s)
'd' is found 1 time(s)
'e' is found 2 time(s)
'h' is found 1 time(s)
'l' is found 1 time(s)
'm' is found 1 time(s)
'o' is found 2 time(s)
'p' is found 3 time(s)
'v' is found 1 time(s)
'w' is found 3 time(s)

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CSS Level 3 Properties is a growing educational system packed with video and written material that you can access 24/7 100% free. The focus here in 2014 is spread between five technologies: HTML, CSS, JavaScript, PHP and MySQL. Learn programming theory, database interaction, web design, animation, graphics editing, vector art, 3D modeling, and much more. The educational experience here is a hybrid one offering both high quality video tutorials and code libraries that grow more robust every day. The code libraries are being assembled so that developers can discover all of the building blocks of their favorite languages. The libraries coupled with high quality video tutorials will take you deep down the rabbit hole very quickly. You can also ask questions and get free advice at