How can PHP functions be used within an echo command?

To use PHP functions within an echo command, you can simply call the function within the echo statement and concatenate the function's return value using the dot (.) operator. This allows you to include dynamic content generated by PHP functions within the output of the echo statement. 

<?php
// Example of using PHP functions within an echo command
$name = "John";
echo "Hello, " . strtoupper($name) . "!"; // Output: Hello, JOHN!
?>

Keywords

PHP functions echo command string concatenation variable interpolation function calls

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