What is causing the "Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING" in the PHP code?

The "Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING" in PHP code occurs when there is a syntax error related to the use of a constant string. This error is commonly caused by missing quotes around a string or using incorrect syntax for concatenation. To solve this issue, carefully check the string literals in the code and ensure that they are correctly enclosed in quotes.

// Incorrect code causing the error
$name = John;
echo "Hello, $name";

// Corrected code
$name = "John";
echo "Hello, $name";