Question

How to convert special characters to HTML entities in PHP

Answer 1

// string htmlspecialchars(string $string [, int $flags = ENT_COMPAT | ENT_HTML401 
//                         [, string $encoding = ini_get("default_charset") 
//                         [, bool $double_encode = true ]]])

$s = htmlspecialchars("<a href='I write'>PHP & C & C# & Java Code</a>", ENT_QUOTES);
echo $s; 

/*
run:

&lt;a href=&#039;I write&#039;&gt;PHP &amp; C &amp; C# &amp; Java Code&lt;/a&gt;

*/

 

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Answer 2

$html = "<p>PHP & 'CSS'</p>";
 
echo htmlspecialchars($html);
 
  
   
/*
run:
 
 
&lt;p&gt;PHP &amp; 'CSS'&lt;/p&gt;
 
*/

 

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Answer 3

$html = "<p>PHP & 'CSS'</p>";
 
echo htmlspecialchars($html, ENT_QUOTES) . "<br />\n"; // Convert Double and Single Quotes
echo htmlspecialchars($html, ENT_COMPAT) . "<br />\n"; // Convert Double Quotes
echo htmlspecialchars($html, ENT_NOQUOTES) . "<br />\n"; // Don't convert quotes
 
  
   
/*
run:
 
&lt;p&gt;PHP &amp; &#039;CSS&#039;&lt;/p&gt;<br />
&lt;p&gt;PHP &amp; 'CSS'&lt;/p&gt;<br />
&lt;p&gt;PHP &amp; 'CSS'&lt;/p&gt;<br />
 
*/

 

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Answer 4

$html = '<p>PHP & "CSS"</p>';
 
echo htmlspecialchars($html, ENT_QUOTES) . "<br />\n"; // Convert Double and Single Quotes
echo htmlspecialchars($html, ENT_COMPAT) . "<br />\n"; // Convert Double Quotes
echo htmlspecialchars($html, ENT_NOQUOTES) . "<br />\n"; // Don't convert quotes
 
  
   
/*
run:
 
&lt;p&gt;PHP &amp; &quot;CSS&quot;&lt;/p&gt;<br />
&lt;p&gt;PHP &amp; &quot;CSS&quot;&lt;/p&gt;<br />
&lt;p&gt;PHP &amp; "CSS"&lt;/p&gt;<br />
 
*/

 

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