php解析json

<?php
$json = '{\"illness_radio_r\":\"传染病史：无\",\"illness_radio_r1\":\"既往手术史：无\",\"illness_radio_r3\":\"既往其他病史：无\",\"illness_radio_r4\":\"既往是否接受过针灸治疗：无\",\"illness_radio_r5\":\"既往是否有晕针史：有\",\"illness_radio_r2\":\"既往外伤史：有\",\"illness_radio_r6\":\"药物过敏史：有\",\"jiwang_zhenjiu\":\"\",\"jiwang_youjibing\":\"\",\"jiwang_guomin\":\"\",\"jiwang_youwaishang\":\"\",\"jiwang_qita\":\"\",\"jiwang_youshoushu\":\"\",\"jiwang_yunzhen\":\"\"}';
$s = '\\"';
$json = str_replace($s, '"', $json);
$dst = json_decode($json, true);
foreach ($dst as $key => $value) {
//echo '<span style="color:green">';
//echo $value;
//echo '</span>';
echo '<div><span style="color:green">' . $value . '</span></div>';
//echo "<textarea name='mydata'>\n";
//echo htmlspecialchars($value)."\n";
//echo "</textarea>";
}
?>