htmlentities

Example

Example 1

Convert characters to HTML entities:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"<? W3S?h????>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">htmlentities</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

The HTML output of the above code is as follows (see the source code):

 <span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span>
<span class="token operator"><</span> html <span class="token operator">></span>
<span class="token operator"><</span> body <span class="token operator">></span>
<span class="token operator"><</span> ? <span class="token constant">W3S</span> ?h°°|§ <span class="token operator">></span>
<span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span>
<span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>

The browser output of the above code:

 <span class="token php language-php"><span class="token delimiter important"><?</span> <span class="token constant">W3S</span> <span class="token operator">?</span> h <span class="token operator">??</span> <span class="token operator">?</span> <span class="token delimiter important">?></span></span>

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Example 2

Convert characters to HTML entities:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Bill & &#39;Steve&#39;"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">htmlentities</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token constant">ENT_COMPAT</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// Convert only double quotes</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">htmlentities</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token constant">ENT_QUOTES</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// Convert double and single quotes</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">htmlentities</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token constant">ENT_NOQUOTES</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// No quotation marks are converted</span>
<span class="token delimiter important">?></span></span>

The HTML output of the above code is as follows (see the source code):

 <span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span>
<span class="token operator"><</span> html <span class="token operator">></span>
<span class="token operator"><</span> body <span class="token operator">></span>
Bill <span class="token operator">&</span> <span class="token string single-quoted-string">&#39;Steve&#39;</span> <span class="token operator"><</span> br <span class="token operator">></span>
Bill <span class="token operator">&</span> <span class="token operator">&</span> <span class="token comment">#039;Tarzan&#039;<br></span>
Bill <span class="token operator">&</span> <span class="token string single-quoted-string">&#39;Steve&#39;</span>

<span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span>
<span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>

The browser output of the above code:

 Bill & 'Steve'
Bill & 'Steve'
Bill & 'Steve'

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Example 3

By using the Western European character set, convert some characters into HTML entities:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"My name is ?yvind ?sane. I&#39;m Norwegian."</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">htmlentities</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token constant">ENT_QUOTES</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ISO-8859-1"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> 
<span class="token comment">// Will only convert double quotes (not single quotes), and uses the character-set Western European</span>
<span class="token delimiter important">?></span></span>

The HTML output of the above code is as follows (see the source code):

 <span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span>
<span class="token operator"><</span> html <span class="token operator">></span>
<span class="token operator"><</span> body <span class="token operator">></span>
My name is ?yvind ?sane <span class="token operator">.</span> <span class="token constant">I</span> &#39;m Norwegian <span class="token operator">.</span>
<span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span>
<span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>

The browser output of the above code:

 My name is ?yvind ?sane. I'm Norwegian.

Try it yourself