PHP 优化print_r 的变量输出

<?php 

function dump($vars, $label = '', $return = false) {

if (ini_get('html_errors')) {

$content = "<pre>\n";

if ($label != '') {

$content .= "<strong>{$label} :</strong>\n";

}

$content .= htmlspecialchars(print_r($vars, true));

$content .= "\n</pre>\n";

} else {

$content = $label . " :\n" . print_r($vars, true);

}

if ($return) { return $content; }

echo $content;

return null;

}

dump( $变量名 ); 

?>