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<title>Check the PHP syntax of (and execute) the specified file</title>
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<div class="refnamediv">
<h1 class="refname">php_check_syntax</h1>
<p class="verinfo">(PHP 5 < 5.0.5)</p><p class="refpurpose"><span class="refname">php_check_syntax</span> — <span class="dc-title">
Check the PHP syntax of (and execute) the specified file
</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.php-check-syntax-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>php_check_syntax</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$error_message</code></span>
] )</div>
<p class="para rdfs-comment">
Performs a syntax (lint) check on the specified
<code class="parameter">filename</code> testing for scripting errors.
</p>
<p class="para">
This is similar to using <strong class="command">php -l</strong> from the <a href="features.commandline.html" class="link">commandline</a> except that this
function will execute (but not output) the checked
<code class="parameter">filename</code>.
</p>
<p class="para">
For example, if a function is defined in <code class="parameter">filename</code>,
this defined function will be available to the file that executed
<span class="function"><strong>php_check_syntax()</strong></span>, but output from
<code class="parameter">filename</code> will be suppressed.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
For technical reasons, this function is deprecated and removed from PHP.
Instead, use <em>php -l somefile.php</em> from the
<a href="features.commandline.html" class="link">commandline</a>.
</p>
</p></blockquote>
</div>
<div class="refsect1 parameters" id="refsect1-function.php-check-syntax-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">filename</code></dt>
<dd>
<p class="para">
The name of the file being checked.
</p>
</dd>
<dt>
<code class="parameter">error_message</code></dt>
<dd>
<p class="para">
If the <code class="parameter">error_message</code> parameter is used, it will
contain the error message generated by the syntax check.
<code class="parameter">error_message</code> is passed by
<a href="language.references.html" class="link">reference</a>.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.php-check-syntax-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> if the lint check passed, and <strong><code>FALSE</code></strong> if the link check
failed or if <code class="parameter">filename</code> cannot be opened.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.php-check-syntax-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>5.0.5</td>
<td>
This function was removed from PHP.
</td>
</tr>
<tr>
<td>5.0.3</td>
<td>
Calling <span class="function"><a href="function.exit.html" class="function">exit()</a></span> after
<span class="function"><strong>php_check_syntax()</strong></span> resulted in a Segfault.
</td>
</tr>
<tr>
<td>5.0.1</td>
<td>
<code class="parameter">error_message</code> is passed by reference.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.php-check-syntax-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example-contents screen">
<div class="examplescode"><pre class="examplescode">php -l somefile.php</pre>
</div>
</div>
</p>
<p class="para">The above example will output
something similar to:</p>
<p class="para">
<div class="example-contents screen">
<div class="examplescode"><pre class="examplescode">PHP Parse error: unexpected T_STRING in /tmp/somefile.php on line 81</pre>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.php-check-syntax-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.include.html" class="function" rel="rdfs-seeAlso">include</a> - include</span></li>
<li class="member"><span class="function"><a href="function.is-readable.html" class="function" rel="rdfs-seeAlso">is_readable()</a> - Tells whether a file exists and is readable</span></li>
</ul>
</p>
</div>
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