makePhoneClickable.php

<?php 
/**
 * Make phone clickable
 * @param  string  $input 
 * @param  boolean $span 
 * @return string
 */
function makePhoneClickable($input, $span = false) {
	$regex = '/(?!\s)[\d\s\.\,\(\)\+]{9,30}\b/';
	$formatLink = function($matches) {
		return "<a href=\"tel:$matches[0]\">$matches[0]</a>";
	};
	$formatLinkSpan = function($matches) {
		return "<a href=\"tel:$matches[0]\"><span>$matches[0]</span></a>";
	};
	$format = $span ? $formatLinkSpan : $formatLink;
	return preg_replace_callback($regex, $format, $input);
}

$input = <<<TEXT
- Số mình là 0912 123 123
- đây +84 942111111
- 01234 56789
- 0956.456.789
- 0923 23 23 23
- 0123 45 67 89 00

- 01234432132
- 0934064004

- 0613985403
- 061 3985403

- +84 1234 4321 32
- +84 01234 4321 32

- +84 93 406 4004
- +84 093 406 4004

- (+84) 1234 4321 32
- (+84) 01234 4321 32
TEXT;

var_dump($input);
var_dump(makePhoneClickable($input));
var_dump(makePhoneClickable($input, true));