What are the potential pitfalls of not properly concatenating multiple values in PHP?

If multiple values are not properly concatenated in PHP, it can result in syntax errors or unexpected output. To avoid this, make sure to use the correct concatenation operator (.) between values when constructing strings. 

// Incorrect way of concatenating values without using the concatenation operator
$value1 = "Hello";
$value2 = "World";
$string = $value1 $value2; // This will result in a syntax error

// Correct way of concatenating values using the concatenation operator
$value1 = "Hello";
$value2 = "World";
$string = $value1 . $value2; // This will output "HelloWorld"

Keywords

concatenation PHP variables strings syntax

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