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<?php
function aa($str)
{
$temp = array();
for ($i = 0; $i < strlen($str); $i++) {
$t = $str[$i];
switch ($t) {
case '(':
array_push($temp, '(');
break;
case ')':
if (empty($temp) || array_pop($temp) != '(') {
return '缺少左括号';
}
}
}
return empty($temp) == true ? 'true' : '缺少右括号';
}
$str = 'aaaa()())';
var_dump(aa($str));
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2022-08-17
2022-11-06
2022-07-29
2022-08-18
2022-07-30
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