在“>”运算符之后不解析PHP文件

I've got a crucial problem with some php files after upgrading from php 5.3 to php 7 (but also to 5.6 or 5.5).

I use the operator ">" within a "if" block. It seems as if the server in this operator terminates the processing. The code behind this operator is displayed as normal HTML text.

For example. The following code

if ($value > 0) {
    echo "This is a test!";
}

leads to:

0){echo "This is a test!";}

What can I do to solve my problem?

Ok I got it. There was a misconfiguration of the php.ini file. My predecessor activated the short_open_tag... and I do not. Thank you all for the help!