CURL：尝试调用http url时出现BAD REQUESt错误

Question

I am trying to call an sms api using a http url .I am trying to call the url using curl in php.I get a BAD REQUEST error .Please explain what I am doing wrong.

// create a new cURL resource
    $ch = curl_init();
    $string1 = "http://api.znisms.com/post/smsv3.asp?userid=alpesh67&apikey=74c6314840a16c5e7db00415a03181f7&message= Congratulation you have been successfully registered in the Placement Management System 
 Email:".$email."
 Password:".$password."&senderid=PMS12345&sendto=".$contactno."";
    echo $string1;
    // set URL and other appropriate options
     curl_setopt($ch, CURLOPT_URL, $string1);
    // grab URL and pass it to the browser
    curl_exec($ch);
    //close cURL resource, and free up system resources
    curl_close($ch);
    //SMS END

I get the following error:

http://api.znisms.com/post/smsv3.asp?userid=alpesh67&apikey=74c6314840a16c5e7db00415a03181f7&message= Congratulation you have been successfully registered in the Placement Management System Email:[e-mail] Password:123456789&senderid=PMS12345&sendto=9773396773
Bad Request

Answer 1

You can't use spaces in a URL. You need to url encode this string:

&message= Congratulation you have been successfully registered in the Placement Management System 
 Email:".$email."
 Password:".$password."

http://php.net/manual/en/function.urlencode.php

Returns a string in which all non-alphanumeric characters except -_. have been replaced with a percent (%) sign followed by two hex digits and spaces encoded as plus (+) signs. It is encoded the same way that the posted data from a WWW form is encoded, that is the same way as in application/x-www-form-urlencoded media type. This differs from the » RFC 3986 encoding (see rawurlencode()) in that for historical reasons, spaces are encoded as plus (+) signs.

I would do something to the effect of:

// create a new cURL resource
    $ch = curl_init();
    $encoded_message = urlencode( "Congratulation you have been successfully registered in the Placement Management System 
 Email:".$email."
 Password:".$password)
    $string1 = "http://api.znisms.com/post/smsv3.asp?userid=alpesh67&apikey=74c6314840a16c5e7db00415a03181f7&message=".$encoded_message."&senderid=PMS12345&sendto=".$contactno."";
    echo $string1;
    // set URL and other appropriate options
     curl_setopt($ch, CURLOPT_URL, $string1);
    // grab URL and pass it to the browser
    curl_exec($ch);
    //close cURL resource, and free up system resources
    curl_close($ch);
    //SMS END