PHP正则之去除括号和括号里面的内容

1.PHP去除花括号和花括号里面的内容

$str = 'dfsas{kslajfljs}45';
$str = preg_replace( '/\{(.*?)\}/', '',$str);
echo $str;

2.PHP去除括号和括号里面的内容

$str = '9(kslajflj)s45';
$str = preg_replace('/\(.*?\)/', '', $str);
echo $str;exit;

3.PHP去除尖括号和尖括号里面的内容

$str = '9sfa<kslj>s45';
$str = preg_replace('/\<.*?\>/', '', $str);
echo $str;exit;

4.PHP去除中括号和中括号里面的内容

$str = '9sfa[ksl64546+j]s45';
$str = preg_replace('/\[.*?\]/', '', $str);
echo $str;exit;

注意：主要看正则的表达式，根据表达式来灵活改变