Case-Insensitive Constants

The declaration of case-insensitive constants has been deprecated. Passing true as the third argument to define will now generate a deprecation warning. The use of case-insensitive constants with a case that differs from the declaration is also deprecated.

Namespaced assert()

Declaring a function called assert() inside a namespace is deprecated. The assert function is subject to special handling by the engine, which may lead to inconsistent behavior when defining a namespaced function with the same name.

Searching Strings for non-string Needle

Passing a non-string needle to string search functions is deprecated. In the future the needle will be interpreted as a string instead of an ASCII codepoint. Depending on the intended behavior, you should either explicitly cast the needle to string or perform an explicit call to chr. The following functions are affected:

• strpos
• strrpos
• stripos
• strripos
• strstr
• strchr
• strrchr
• stristr

Strip-Tags Streaming

The fgetss function and the string.strip_tags stream filter have been deprecated. This also affects the SplFileObject::fgetss method and gzgetss function.