PHP替换json中所有相同的字符串

//php反编码解析json信息

//json_decode(json字符串);

$city = array('shandong'=>'jinan','henan'=>'zhengzhou','hebei'=>'shijiazhuang');

$jn_city = json_encode($city);

//反编码json

$fan_city = json_decode($jn_city,false);//第二个参数false则返回object类型，false可以默认不写

var_dump($fan_city);//object(stdClass)#1 (3) { ["shandong"]=> string(5) "jinan" ["henan"]=> string(9) "zhengzhou" ["hebei"]=> string(12) "shijiazhuang" }

echo "

";

$fan_city = json_decode($jn_city,true);//第二个参数true则返回array类型

var_dump($fan_city);//array(3) { ["shandong"]=> string(5) "jinan" ["henan"]=> string(9) "zhengzhou" ["hebei"]=> string(12) "shijiazhuang" }

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