fgets

实例

例子 1

<span class="token php language-php"><span class="token delimiter important"><?php</span>

<span class="token variable">$file</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"test.txt"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"r"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">fclose</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token delimiter important">?></span></span>

输出类似：

Hello, this is a test file.

例子 2

<span class="token php language-php"><span class="token delimiter important"><?php</span>

<span class="token variable">$file</span> <span class="token operator">=</span> <span class="token function">fopen</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"test.txt"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"r"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token keyword">while</span><span class="token punctuation">(</span><span class="token operator">!</span> <span class="token function">feof</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
  <span class="token punctuation">{</span>
  <span class="token keyword">echo</span> <span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">)</span><span class="token operator">.</span> <span class="token string double-quoted-string">"<br />"</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>

<span class="token function">fclose</span><span class="token punctuation">(</span><span class="token variable">$file</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

输出类似：

Hello, this is a test file. 
There are three lines here. 
This is the last line.