Blueimp adding custom variables

Try this errorTesting.php file which may help you understand why the errors are not showing:

file: errorTesting.php

<?php 
        ini_set('display_errors',0);

        $errorLogFileNEW = 'errorLogFileNEW.php';

        echo '<br />' .__LINE__ .' : OLD: ' .ini_set('error_log', $errorLogFileNEW);

        echo '<br />' .__LINE__ .' : NEW: ' .ini_get('error_log');

        echo '<br />' .__LINE__ .' : Before $forceError/0 <br />';
        highlight_file($errorLogFileNEW);

        echo '<br />'.__LINE__ .$forceError/0;

        echo '<br />' .__LINE__ .' :  After $forceError/0 <br />';
        highlight_file($errorLogFileNEW);

        echo '<br />' .__LINE__ .' Show Errors - ini_set("display_errors",1);';
        ini_set('display_errors',1);

        echo '<br />' .__LINE__ .' : After: <br />';
        echo $i2/0;

        echo '<br />' .__LINE__ .' - filesize($errorLogFileNEW) = ' .filesize($errorLogFileNEW);
        highlight_file($errorLogFileNEW);

        $deleteErrorLog = 10;
        if( $deleteErrorLog && file_exists($errorLogFileNEW) ):
            $ok = unlink($errorLogFileNEW);
            if($ok):
                #echo '<br />' .__LINE__ .' Just deleted: ' .$errorLogFileNEW;
            endif;
        endif;    
    ?>