How to detect if a string has a new line break in it?
line break is \r\n
on windows and on UNIX machines it is \n
.
so its search for PHP_EOL
instead of "\n" for cross-OS compatibility, or search for both "\r\n" and "\n".
Your existing test doesn't work because you don't use double-quotes around your line break character ('\n'
). Change it to:
if(strstr($string, "\n")) {
Or, if you want cross-operating system compatibility:
if(strstr($string, PHP_EOL)) {
Also note that strpos
will return 0 and your statement will evaluate to FALSE if the first character is \n
, so strstr
is a better choice. Alternatively you could change the strpos
usage to:
if(strpos($string, "\n") !== FALSE) {
echo 'New line break found';
}
else {
echo 'not found';
}