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add Northern Ireland (XI) validation via VIES with regex #76

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add Northern Ireland (XI) validation via VIES with regex #76

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47bdcbe
[TASK] add Northern Ireland (XI) validation via VIES with regex
wiegandj Jul 18, 2025
c9daa3d
[TASK] add tests for Northern Ireland (XI) validation
wiegandj Jul 18, 2025
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1 change: 1 addition & 0 deletions src/Validator.php
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ class Validator
'SI' => '\d{8}',
'SK' => '\d{10}',
'SM' => '\d{5}',
'XI' => '(\d{3} ?\d{4} ?\d{2}( ?\d{3})?|[A-Z\d]{5})',
];

/**
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8 changes: 8 additions & 0 deletions tests/ValidatorTest.php
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Expand Up @@ -54,6 +54,11 @@ public function testValidateVatNumberFormat(): void
'SE123456789012',
'SI12345678',
'SK1234567890',
'XI123456789',
'XI123 4567 89',
'XI123456789111',
'XI123 4567 89 111',
'XIHZ6AB',
];

$validator = new Validator();
Expand Down Expand Up @@ -96,6 +101,7 @@ public function testValidateVatNumberFormat(): void
'SE12345678901',
'SI1234567',
'SK123456789',
'XI12345678',

// valid number but with prefix
'invalid_prefix_GB999999973',
Expand All @@ -104,13 +110,15 @@ public function testValidateVatNumberFormat(): void
'invalid_prefix_BE0123456789',
'invalid_prefix_MT12345678',
'invalid_prefix_LT123456789',
'invalid_prefix_XI123456789',

// valid number but with suffix
'IE1234567X_invalid_suffix',
'ESB1234567C_invalid_suffix',
'BE0123456789_invalid_suffix',
'MT12345678_invalid_suffix',
'LT123456789_invalid_suffix',
'XI123456789_invalid_suffix',
];

foreach ($invalid as $format) {
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