JS代码 ¶

console.log('one two three'.match( /e two/ )[0]); //e two
//空格后有+，表示1个，或多个空格，于是也匹配
console.log('one two three'.match( /e +two/ )[0]); //e two
//空格也属于\s代指的空白范围嘛
console.log('one two three'.match( /e\stwo/ )[0]); //e two
//连续多个空格的字符串
console.log('one    two three'.match( /e\s+two/ )[0]); //e    two
var tab符 = String.fromCharCode(9);
console.log(('one xxx two' + tab符 + 'three').match( /two\s+thr/ )[0]); //two thr
PHP代码 ¶
preg_match('#e two#', 'one two three', $matchResult1);
//空格后有+，表示1个，或多个空格，于是也匹配
preg_match('#e +two#', 'one two three', $matchResult2);
//空格也属于\s代指的空白范围嘛
preg_match('#e\s+two#', 'one two three', $matchResult3);
//连续多个空格的字符串
preg_match('#e\s+two#', 'one    two three', $matchResult4);
$tab符 = chr(9);
preg_match('#two\s+thr#', 'one xxx two' . $tab符 . 'three', $matchResult5);
header('Content-type:text/plain');
print_r([
	$matchResult1[0], //e two
	$matchResult2[0], //e two
	$matchResult3[0], //e two
	$matchResult4[0], //e    two
	$matchResult5[0], //two thr