<?php
	error_reporting(-1);
 
	function checkNumber($number) {
		$regexp = '/^ ?(8|\\+ ?7)([\\s-()]*\\d){10}$/';
		if (preg_match($regexp, $number)) {
			echo "Номер корректный\n";
			$result = preg_replace('/\\D/', '', $number);
			$result = '8'.mb_substr($result, 1);
			echo "В нормальном виде - {$result}\n";
		} else {
			echo "Неверный формат ввода\n";
		}
	}
 
	$correct = array('84951234567', '+74951234567', '8-495-1-234-567', ' 8 (8122) 56-56-56', '8-911-1234567', '8 (911) 12 345 67', '8-911 12 345 67', '8 (911) - 123 - 45 - 67', '+ 7 999 123 4567', '8 ( 999 ) 1234567', '8 999 123 4567');
 
	$incorrect = array('02', '84951234567 позвать люсю', '849512345', '849512345678', 
		'8 (409) 123-123-123', '7900123467', '5005005001', '8888-8888-88',
		'84951a234567', '8495123456a', 
		'+1 234 5678901', // неверный код страны
		'+8 234 5678901', // либо 8 либо +7
		'7 234 5678901' // нет +
		);
 
	foreach ($correct as $number) {
		checkNumber($number);
	}
	echo "-------\n";
	foreach ($incorrect as $number) {
		checkNumber($number);
	}
?>

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