[php]htmlentities — 函數把字符轉換為 HTML 實體。


官方範例1
<?php
$str = "A 'quote' is <b>bold</b>";

// Outputs: A 'quote' is &lt;b&gt;bold&lt;/b&gt;
echo htmlentities($str);

// Outputs: A &#039;quote&#039; is &lt;b&gt;bold&lt;/b&gt;
echo htmlentities($str, ENT_QUOTES);
?>

官方範例2
<?php
$str = "\x8F!!!";

// Outputs an empty string
echo htmlentities($str, ENT_QUOTES, "UTF-8");

// Outputs "!!!"
echo htmlentities($str, ENT_QUOTES | ENT_IGNORE, "UTF-8");
?>


例子

<html>
<body>
<?php
$str = "John & 'Adams'";
echo htmlentities($str, ENT_COMPAT);
echo "<br />";
echo htmlentities($str, ENT_QUOTES);
echo "<br />";
echo htmlentities($str, ENT_NOQUOTES);
?>
</body>
</html>

瀏覽器輸出：

John & 'Adams'
John & 'Adams'
John & 'Adams'

如果在瀏覽器中查看源代碼，會看到這些 HTML：

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


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