str_word_count

实例

例子 1

计算字符串 "I love Shanghai!" 中的单词数：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">str_word_count</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"I love Shanghai!"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试

例子 2

返回包含字符串中的单词的数组：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token function">str_word_count</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"I love Shanghai!"</span><span class="token punctuation">,</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试

例子 3

返回一个数组，其中的键名是单词在字符串中的位置，键值是实际的单词：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token function">str_word_count</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"I love Shanghai!"</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试

例子 4

设置及不设置 char 参数：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token function">str_word_count</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"I love Shanghai & good morning!"</span><span class="token punctuation">,</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">print_r</span><span class="token punctuation">(</span><span class="token function">str_word_count</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"I love Shanghai & good morning!"</span><span class="token punctuation">,</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"&"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

亲自试一试