EXPECTF substitution options

The --EXPECTF-- section uses a number of substitution tags for strings or digits that appear in test case output but which may vary between test runs. The most common example of this is to use %s and %d to match the file path and line number which are output by PHP Warnings.

The substitution tags and their meanings are summarised below

%code Meaning
%e Represents a directory separator, for example / on Linux.
%s One or more of anything (charater or white space) except the end of line character.
%S Zero or more of anything (charater or white space) except the end of line character.
%a One or more of anything (charater or white space) including the end of line character.
%A Zero or more of anything (charater or white space) including the end of line character.
%w Zero or more white space characters.
%i A signed integer value, for example +3142, -3142.
%d An unsigned integer value, for example 123456.
%x One or more hexadecimal character. That is, characters in the range 0-9, a-f, A-F.
%f A floating point number, for example: 3.142, -3.142, 3.142E-10, 3.142e+10.
%c A single character of any sort (.)
%r...%r Any string (...) enclosed between two %r will be treated as a regular expression
%unicode|string% Matches the string 'unicode' in PHP6 test output and 'string' in PHP5 test output.
%binary_string_optional% Matches 'Binary string' in PHP6 output, 'string' in PHP5 output. Used in PHP Warning messages.
%unicode_string_optional% Matches 'Unicode string' in PHP6 output, 'string' in PHP5 output. Used in PHP Warning messages.
%u|b% Matches a single 'u' in PHP6 test output where the PHP5 output from the same test hs no character in that position.