使用php替换json字符串中的双引号

Question

I need to convert a JSON string in array using PHP, but I need to escape double quotes.

$string = '["label":"Name","type":"text","placeholder":"Mario","name":"name",*],
["label":"Email","type":"email","placeholder":"[e-mail]","name":"email",*],
["label":"Message","type":"textarea","value":"In this box you can insert a <a href="#" target="_blank">link</a>"]';
$jsonify = strip_tags($string,"<a>");
$jsonify = str_replace('*','"required":"required"',$jsonify);
$jsonify = str_replace('[','{',str_replace(']','}',$jsonify));
$jsonify = str_replace(array("
", ""),"",$jsonify);
$jsonify = preg_replace("/\s+/", " ", $jsonify);
$jsonify = '['.jsonify.']';
echo $jsonify;

// OUTPUT IS:
[{"label":"Name","type":"text","placeholder":"Mario","name":"name","required":"required"}, {"label":"Email","type":"email","placeholder":"[e-mail]","name":"email","required":"required"}, {"label":"Message","type":"textarea","value":"In this box you can insert a <a href="#" target="_blank">link</a>"}]

// BUT IS NOT JSON VALID. IT SHOULD BE THIS:
[{"label":"Name","type":"text","placeholder":"Mario","name":"name","required":"required"}, {"label":"Email","type":"email","placeholder":"[e-mail]","name":"email","required":"required"}, {"label":"Message","type":"textarea","value":"In this box you can insert a <a href=\"#\" target=\"_blank\">link</a>"}]

How can I obtain a valid JSON string?

Answer 1

your string is not a json valid

this is a $string json valid

  [
    {
        "label": "Name",
        "type": "text",
        "placeholder": "Mario",
        "name": "name"
    },
    {
        "label": "Email",
        "type": "email",
        "placeholder": "[e-mail]",
        "name": "email"
    },
    {
        "label": "Message",
        "type": "textarea",
        "value": "In this box you can insert a <a href='#' target='_blank'>link</a>"
    }
]

test this,and remove other code strip_tags,Str_replace,preg_replace

echo json_encode($string);