php html_entity_decode執行個體教程

關於html_entity_decode在大多數情況下是與htmlspecialchars htmlentities配合使用的

html_entity_decode用法:
string html_entity_decode ( string $string [, int $quote_style = ENT_COMPAT [, string $charset ]] )

html_entity_decode() 函數把 HTML 實體轉換為字元。

html_entity_decode() 是 htmlentities() 的反函數也html_entity_decode() 是 htmlspecialchars() 的反函數。

 

$str = "A 'quote' is <b>bold www.111cn.net</b>";

Outputs: A 'quote' is &lt;b&gt;bold&lt;/b&gt;
$s = htmlspecialchars($str);

echo $s;

Outputs: A &#039;quote&#039; is &lt;b&gt;boldwww.111cn.net&lt;/b&gt;

echo html_entity_decode($s);

A 'quote' is bold

再看一個執行個體

<?php
$str = "John &amp; &#039;Adams&#039;";
echo html_entity_decode($str);
echo "<br />";
echo html_entity_decode($str, ENT_QUOTES);
echo "<br />";
echo html_entity_decode($str, ENT_NOQUOTES);
?>瀏覽器輸出：

John & 'Adams'
John & 'Adams'
John & 'Adams'如果在瀏覽器中查看原始碼，會看到這些 HTML：

<html>
<body>
John & &#039;Adams&#039;<br />
John & 'Adams'<br />
John & &#039;Adams&#039;
</body>
</html>