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<title>Inserts HTML line breaks before all newlines in a string</title>
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<div class="refnamediv">
<h1 class="refname">nl2br</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">nl2br</span> — <span class="dc-title">Inserts HTML line breaks before all newlines in a string</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.nl2br-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>nl2br</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$string</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$is_xhtml</code><span class="initializer"> = <strong><code>TRUE</code></strong></span></span>
] )</div>
<p class="para rdfs-comment">
Returns <code class="parameter">string</code> with <code class="code"><br /></code> or
<code class="code"><br></code> inserted before all newlines (<em>\r\n</em>,
<em>\n\r</em>, <em>\n</em> and <em>\r</em>).
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.nl2br-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">string</code></dt>
<dd>
<p class="para">
The input string.
</p>
</dd>
<dt>
<code class="parameter">is_xhtml</code></dt>
<dd>
<p class="para">
Whether to use XHTML compatible line breaks or not.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.nl2br-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the altered string.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.nl2br-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-6054">
<p><strong>Example #1 Using <span class="function"><strong>nl2br()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">nl2br</span><span style="color: #007700">(</span><span style="color: #DD0000">"foo isn't\n bar"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
foo isn't<br />
bar
</pre></div>
</div>
</div>
<div class="example" id="example-6055">
<p><strong>Example #2 Generating valid HTML markup using the <code class="parameter">is_xhtml</code> parameter</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">nl2br</span><span style="color: #007700">(</span><span style="color: #DD0000">"Welcome\r\nThis is my HTML document"</span><span style="color: #007700">, </span><span style="color: #0000BB">false</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Welcome<br>
This is my HTML document
</pre></div>
</div>
</div>
<div class="example" id="example-6056">
<p><strong>Example #3 Various newline separators</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$string </span><span style="color: #007700">= </span><span style="color: #DD0000">"This\r\nis\n\ra\nstring\r"</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">nl2br</span><span style="color: #007700">(</span><span style="color: #0000BB">$string</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
This<br />
is<br />
a<br />
string<br />
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.nl2br-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>5.3.0</td>
<td>
Added the optional <code class="parameter">is_xhtml</code> parameter. Before
this version '<br />' was always inserted.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.nl2br-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.htmlspecialchars.html" class="function" rel="rdfs-seeAlso">htmlspecialchars()</a> - Convert special characters to HTML entities</span></li>
<li class="member"><span class="function"><a href="function.htmlentities.html" class="function" rel="rdfs-seeAlso">htmlentities()</a> - Convert all applicable characters to HTML entities</span></li>
<li class="member"><span class="function"><a href="function.wordwrap.html" class="function" rel="rdfs-seeAlso">wordwrap()</a> - Wraps a string to a given number of characters</span></li>
<li class="member"><span class="function"><a href="function.str-replace.html" class="function" rel="rdfs-seeAlso">str_replace()</a> - Replace all occurrences of the search string with the replacement string</span></li>
</ul>
</p>
</div>
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