backslash- what it mean
<p>What is difference between <code>\</code> and <code>\\</code>? </p>

<pre><code> echo $path_1="C:\wamp\www\practice\";
</code></pre>

<p>Output shows error:</p>

<blockquote>
  <p>Parse error: syntax error, unexpected $end, expecting T_VARIABLE or T_DOLLAR_OPEN_CURLY_BRACES or T_CURLY_OPEN</p>
</blockquote>

<pre><code> echo $path_1="C:\\wamp\\www\\practice\\";
</code></pre>

<p>Output:</p>

<blockquote>
  <p>C:\wamp\www\practice\</p>
</blockquote>

<p>Instead of printing <code>C:\\wamp\\www\\practice\\</code> it prints <code>C:\wamp\www\practice\</code></p>
