PHP 手冊
前一頁 |  | 下一頁

# str_word_count

(PHP 4 >= 4.3.0, PHP 5)

str_word_count -- Return information about words used in a string

## Description

mixed str_word_count ( string string [, int format] )

Counts the number of words inside string. If the optional format is not specified, then the return value will be an integer representing the number of words found. In the event the format is specified, the return value will be an array, content of which is dependent on the format. The possible value for the format and the resultant outputs are listed below.

- 1 - returns an array containing all the words found inside the string.

- 2 - returns an associative array, where the key is the numeric position of the word inside the string and the value is the actual word itself.

For the purpose of this function, 'word' is defined as a locale dependent string containing alphabetic characters, which also may contain, but not start with "'" and "-" characters.

範例 1. Example uses for str_word_count()

`<?php $str = "Hello friend, you're looking good today!"; $a = str_word_count($str, 1); $b = str_word_count($str, 2); $c = str_word_count($str); print_r($a); print_r($b); echo $c; ?>`

Output may look like:

    Array
    (
        [0] => Hello
        [1] => friend
        [2] => you're
        [3] => looking
        [4] => good
        [5] => today
    )

    Array
    (
        [0] => Hello
        [6] => friend
        [14] => you're
        [29] => looking
        [46] => good
        [51] => today
    )

    6

See also explode(), preg_split(), split(), count_chars(), and substr_count().

前一頁 | 內容 | 下一頁
str_split | 上一層 | strcasecmp