Do return false; halt the script in user defined functions (PHP)

[alex_michael]

What does return true; and return false; exactly responds in user defined functions? \[code\]function valid_image($image, $target, $width, $height = 0) { if($image["type"] !== "image/jpeg") { alert('File must be of type image/jpeg'); return false; } if(file_exists($target.$image['name'])) { alert('File Already Exists, Please Choose a Different Name for the File'); return false; } return true; }\[/code\]Considering the above example if the first condition \[code\]if($image["type"] !== "image/jpeg"\[/code\] returns true. Does the return false; statement right below it stop the script from executing the below code ?