$re = '/(
\+?
(?:
(?:
9[976]\d
|
8[987530]\d
|
6[987]\d
|
5[90]\d
|
42\d
|
3[875]\d
|
2[98654321]\d
|
9[8543210]
|
8[6421]
|
6[6543210]
|
5[87654321]
|
4[987654310]
|
3[9643210]
|
2[70]
|
7
|
0
|
1
)
|
\(
(?:
9[976]\d
|
8[987530]\d
|
6[987]\d
|
5[90]\d
|
42\d
|
3[875]\d
|
2[98654321]\d
|
9[8543210]
|
8[6421]
|
6[6543210]
|
5[87654321]
|
4[987654310]
|
3[9643210]
|
2[70]
|
7
|
1
)
\))
[0-9. -]{4,14}
)(?:\b|x\d+)/x';
$str = '+86-400-660-8680
+86-400-660-8680
+1 888 204 3539
1-800-667-6389
+1-400-660-8680
(877) 359-6695
800-692-7753
0365987456
+3342568795
05987213
+33 321 82
';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php