求一段能用的PHP发送json数据的代码

不要复制粘贴的，网上都不能用
function http_post_data($url, $strjson) {

    $ch = curl_init();  
    curl_setopt($ch, CURLOPT_POST, 1);  
    curl_setopt($ch, CURLOPT_URL, $url);  
    curl_setopt($ch, CURLOPT_POSTFIELDS, $strjson);  
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(  
        'Content-Type: application/json; charset=utf-8',  
        'Content-Length: ' . strlen($strjson))  
    );  
    ob_start();  
    curl_exec($ch);  
    $return_content = ob_get_contents();  
    ob_end_clean();  

    $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);  
    return array($return_code, $return_content);  
}  
    这个啊  什么的试了好多个了

机器人真傻比 说了不行还发
$strjson = '{"ccode":"12345o61sd4d67w" , "ddate":"2015-12-16", "ccuscode":"0100001", "cinvcode":"100101", "iquantity":"1", "address":"测试地址", "cmemo":"无", "cmaker":"demo", "cverifer":"demo", "dpredate":"2015-12-17", "imoney":"1"}'
$url = "http://61.153.225.106:5678/Service.asmx/WriteSomain"
能返回true的发一个代码啊