PHP count_chars() Function
PHP count_chars() function returns information about characters used in a string.
Syntax
count_chars() Function Parameter
Parameter | Description |
str : | Required parameter. The examined string. |
mode : | Optional parameter. Returns modes. 0 is default. different modes are following:
- 0 - an array with the ASCII value as key and number of occurrences 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 unique characters is returned.
- 4 - a string containing all not used characters is returned.
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count_chars() Function Return Value
Return Value : | Returns one of the mode mentioned above. |
count_chars() Function Example 1
count_chars() Function Example 2