What are the potential pitfalls of using the equal sign (=) instead of the concatenation operator (.) in PHP code?

Using the equal sign (=) instead of the concatenation operator (.) in PHP code will result in overwriting the value of the variable instead of concatenating the strings. This can lead to unexpected results and errors in your code. To concatenate strings in PHP, you should use the dot operator (.) to join them together. 

// Incorrect usage of equal sign
$string1 = "Hello";
$string2 = "World";
$result = $string1 = $string2; // $result will be "World"

// Correct concatenation using dot operator
$string1 = "Hello";
$string2 = "World";
$result = $string1 . $string2; // $result will be "HelloWorld"

Keywords

equal sign concatenation operator PHP code string manipulation syntax error

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