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?>
<div id="filter.examples.sanitization" class="section">
  <h2 class="title">除去</h2>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>例1 メールアドレスの検証、および不正な部分の除去</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$a </span><span style="color: #007700">= </span><span style="color: #DD0000">'joe@example.org'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$b </span><span style="color: #007700">= </span><span style="color: #DD0000">'bogus - at - example dot org'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$c </span><span style="color: #007700">= </span><span style="color: #DD0000">'(bogus@example.org)'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$sanitized_a </span><span style="color: #007700">= </span><span style="color: #0000BB">filter_var</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">, </span><span style="color: #0000BB">FILTER_SANITIZE_EMAIL</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">filter_var</span><span style="color: #007700">(</span><span style="color: #0000BB">$sanitized_a</span><span style="color: #007700">, </span><span style="color: #0000BB">FILTER_VALIDATE_EMAIL</span><span style="color: #007700">)) {<br />    echo </span><span style="color: #DD0000">"処理済の (a) はメールアドレスとして有効です。\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">$sanitized_b </span><span style="color: #007700">= </span><span style="color: #0000BB">filter_var</span><span style="color: #007700">(</span><span style="color: #0000BB">$b</span><span style="color: #007700">, </span><span style="color: #0000BB">FILTER_SANITIZE_EMAIL</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">filter_var</span><span style="color: #007700">(</span><span style="color: #0000BB">$sanitized_b</span><span style="color: #007700">, </span><span style="color: #0000BB">FILTER_VALIDATE_EMAIL</span><span style="color: #007700">)) {<br />    echo </span><span style="color: #DD0000">"処理済のメールアドレスは有効です。"</span><span style="color: #007700">;<br />} else {<br />    echo </span><span style="color: #DD0000">"処理済の (b) はメールアドレスとして無効です。\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">$sanitized_c </span><span style="color: #007700">= </span><span style="color: #0000BB">filter_var</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">, </span><span style="color: #0000BB">FILTER_SANITIZE_EMAIL</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">filter_var</span><span style="color: #007700">(</span><span style="color: #0000BB">$sanitized_c</span><span style="color: #007700">, </span><span style="color: #0000BB">FILTER_VALIDATE_EMAIL</span><span style="color: #007700">)) {<br />    echo </span><span style="color: #DD0000">"処理済の (c) はメールアドレスとして有効です。\n"</span><span style="color: #007700">;<br />    echo </span><span style="color: #DD0000">"処理前: </span><span style="color: #0000BB">$c</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />    echo </span><span style="color: #DD0000">"処理後:  </span><span style="color: #0000BB">$sanitized_c</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

    <div class="example-contents"><p>上の例の出力は以下となります。</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
処理済の (a) はメールアドレスとして有効です。
処理済の (b) はメールアドレスとして無効です。
処理済の (c) はメールアドレスとして有効です。
処理前: (bogus@example.org)
処理後: bogus@example.org
</pre></div>
    </div>
   </div>
  </p>
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