https://www.bairesdev.com/tools/phpcodechecker/
PHP Code Checker - Syntax Check for Common PHP Mistakes
An advanced, custom PHP code checker that searches your code for common, hard to find typos and mistakes; includes a syntax check.
php codesyntax checkcheckercommonmistakes
https://mxtoolbox.com/problem/bimi/bimi-syntax-check?page=health_dns&hidetoc=0&hidepitch=0&showlogin=1&action=dns:stage3.com.ar&domain=stage3.com.ar
BIMI - BIMI Syntax Check
bimisyntaxcheck
https://mxtoolbox.com/problem/bimi/bimi-syntax-check?page=prob_blacklist&ip=190.149.156.171&link=button&action=blacklist:190.149.156.171&showLogin=1&hidetoc=1&reason=127.0.0.36
BIMI - BIMI Syntax Check
bimisyntaxcheck
https://mxtoolbox.com/problem/dkim/dkim-syntax-check?page=prob_blacklist&ip=35.234.96.61&link=button&action=blacklist:35.234.96.61&showLogin=1&hidetoc=1&reason=127.0.0.2
DKIM - DKIM Syntax Check
dkimsyntaxcheck
https://mxtoolbox.com/problem/dmarc/dmarc-syntax-check?page=prob_dkim&action=dkim:elinkworld.com:8d4da252ab8f892&showlogin=1&hidepitch=0&hidetoc=1
DMARC - DMARC Syntax Check
dmarcsyntaxcheck
https://regex101.com/library/lS5iT8?page=1&search=&orderBy=MOST_DOWNVOTES&filterFlavors=golang&filterFlavors=dotnet&filterFlavors=java&filterFlavors=javascript
regex101: Check syntax port ACL VNG
Search, filter and view user submitted regular expressions in the regex library. Over 20,000 entries, and counting!
checksyntaxportaclvng
https://regex101.com/library/lS5iT8?orderBy=MOST_DOWNVOTES&page=4&search=&filterFlavors=golang&filterFlavors=javascript&filterFlavors=rust&filterFlavors=dotnet&filterFlavors=java&filterFlavors=python
regex101: Check syntax port ACL VNG
Search, filter and view user submitted regular expressions in the regex library. Over 20,000 entries, and counting!
checksyntaxportaclvng
https://mxtoolbox.com/problem/bimi/bimi-syntax-check?page=prob_blacklist
BIMI - BIMI Syntax Check
bimisyntaxcheck
https://mxtoolbox.com/problem/mta-sts/mta-sts-syntax-check?reason=127.0.0.7
MTA-STS - MTA-STS Syntax Check
mtastssyntaxcheck