初始化php中的常量[重复]

Question

This question already has an answer here:

• What does the PHP error message “Notice: Use of undefined constant” mean? 9 answers

i have placed these code in my php file. i am getting some errors like,

Use of undefined constant To - assumed 'To' Use of undefined constant To - assumed 'Message' etc.

How do I declare the constants?

$sendsms =""; //initialise the sendsms variable
$param[To] = "0123456";
$param[Message] = "testmsg";
$param[UserName] = "user";
$param[Password] = "pwd";
$param[Mask] = "TTNERD";
$param[v] = "1.1"; 
$param[Type] = "Individual"

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Answer 1

Wrap those array keys in quotes:

$param[To] becomes $param['To']