PHP8 supports
123456789 => 0123456789 - added leading zero 01234567890 => 01234567890 - without changes 000123456789 => 0123456789 - removed extra zeros
12345678910 => 01234567890 - added leading zero 01234567890 => 01234567890 - without changes
Added SNILS and INN validator
Added INN (Taxpayer Identification Number) validator
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