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doc: update document. 7feb28b239

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jaywcjlove
2022-11-22 14:49:09 +00:00
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@ -35,7 +35,7 @@
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="hellophp"><a aria-hidden="true" tabindex="-1" href="#hellophp"><span class="icon icon-link"></span></a>hello.php</h3><div class="wrap-body">
<pre class="language-php"><code class="language-php code-highlight"><span class="code-line"><span class="token php language-php"><span class="token delimiter important">&#x3C;?php</span> <span class="token comment">// 以 PHP 开放标签开头</span>
</span></span><span class="code-line"><span class="token php language-php"><span class="token keyword">echo</span> <span class="token string double-quoted-string">"Hello World\n"</span><span class="token punctuation">;</span>
</span></span><span class="code-line"><span class="token php language-php"><span class="token keyword">print</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Hello quickref.me"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span></span><span class="code-line"><span class="token php language-php"><span class="token keyword">print</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Hello jaywcjlove.github.io"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span></span><span class="code-line"><span class="token php language-php"><span class="token delimiter important">?></span></span>
</span></code></pre>
<p>PHP 运行命令</p>
@ -52,7 +52,7 @@
</span></code></pre>
<p>查看: <a href="#php-%E7%B1%BB%E5%9E%8B">Types</a></p>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="字符串-strings"><a aria-hidden="true" tabindex="-1" href="#字符串-strings"><span class="icon icon-link"></span></a>字符串 Strings</h3><div class="wrap-body">
<pre class="language-php"><code class="language-php code-highlight"><span class="code-line"><span class="token variable">$url</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"quickref.me"</span><span class="token punctuation">;</span>
<pre class="language-php"><code class="language-php code-highlight"><span class="code-line"><span class="token variable">$url</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"jaywcjlove.github.io"</span><span class="token punctuation">;</span>
</span><span class="code-line"><span class="token keyword">echo</span> <span class="token string double-quoted-string">"I'm learning PHP at <span class="token interpolation"><span class="token variable">$url</span></span>"</span><span class="token punctuation">;</span>
</span><span class="code-line"><span class="token comment">// 连接字符串</span>
</span><span class="code-line"><span class="token keyword">echo</span> <span class="token string double-quoted-string">"I'm learning PHP at "</span> <span class="token operator">.</span> <span class="token variable">$url</span><span class="token punctuation">;</span>
@ -858,7 +858,7 @@
</span></code></pre>
<p>另见: <a href="https://wiki.php.net/rfc/nullsafe_operator">Nullsafe 运算符</a></p>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="常用表达"><a aria-hidden="true" tabindex="-1" href="#常用表达"><span class="icon icon-link"></span></a>常用表达</h3><div class="wrap-body">
<pre class="language-php"><code class="language-php code-highlight"><span class="code-line"><span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Visit Quickref.me"</span><span class="token punctuation">;</span>
<pre class="language-php"><code class="language-php code-highlight"><span class="code-line"><span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Visit jaywcjlove.github.io"</span><span class="token punctuation">;</span>
</span><span class="code-line"><span class="token keyword">echo</span> <span class="token function">preg_match</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"/qu/i"</span><span class="token punctuation">,</span> <span class="token variable">$str</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment"># => 1</span>
</span></code></pre>
<p>查看: <a href="./regex.html#php%E4%B8%AD%E7%9A%84%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F">PHP中的正则表达式</a></p>