How can the issue of syntax error, unexpected T_DNUMBER in PHP code be resolved?

To resolve the issue of syntax error, unexpected T_DNUMBER in PHP code, you need to ensure that any numeric values in your code are not prefixed with a dollar sign ($). This error occurs when PHP encounters a decimal number (floating-point number) with a dollar sign before it, which is not valid syntax in PHP. Simply remove the dollar sign from the numeric values in your code to fix this issue.

// Incorrect code with syntax error
$number = $1.23;

// Corrected code without syntax error
$number = 1.23;