How can improperly using echo in PHP scripts lead to errors or unexpected behavior?

Improperly using echo in PHP scripts can lead to errors or unexpected behavior when trying to output HTML code or variables. To prevent this, always ensure that the echo statement is properly formatted with the correct syntax and concatenation when needed. 

// Incorrect usage of echo
echo "<h1>Welcome, $name!</h1>";

// Correct usage of echo with concatenation
echo "<h1>Welcome, " . $name . "!</h1>";

Keywords

echo PHP scripts errors unexpected behavior improper use

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