What is the syntax of "search" and "where" in PHP API?

Product Support
1

I’ve missing deeper explanation and more examples when it comes up to filter out something using the PHP API. What is the right syntax? What is possible to do here?
https://developer.mautic.org/#list-contacts

Could it be, “search” is simply the same as one puts into the searchbox of the WebGUI?

Search Help
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Search Operators:
+ (plus sign) - Search for the exact string (i.e. if admin, then administrator will not match)
! (exclamation mark) - Not equals string
" " (double quotes) - Search by phrase
( ) (parentheses) - Group expressions together.
OR - By default the expressions will be joined as AND statements. Use the OR operator to change that.
% - Use the % as a wildcard to search for specific names or values in a phrase (i.e. to find all companies with the word ‘Technologies’ then type %technologies%)

Search commands
is:anonymous
is:unowned
is:mine
email:*
segment:{segment_alias}
name:*
company:*
owner:*
ip:*
ids:ID1,ID2 (comma separated IDs, no spaces)
common:{segment_alias} + {segment_alias} + ...
tag:*
stage:*
email_sent:EMAIL_ID
email_read:EMAIL_ID
email_queued:EMAIL_ID
email_pending:EMAIL_ID
2

can you please suggest one example (line of code) for group expression in any language except php