字串截取

Question

$s = prge_replace("/.*aa(.+)bb.*/","\\1",$a);

Answer 1

用split  分两次截取也可以split($a,"aa") 然后再用bb截取一次

Answer 2

$s = prge_replace("/.*aa(.+)bb.*/","\\1",$a);发生语法错误
split($a,"aa") 效率太低了

Answer 3

error is a char!
$s = preg_replace("/.*aa(.+)bb.*/","\\1",$a);

Answer 4

<?
$a="322aa2212345bb";
$s = preg_replace("/.*aa(.+)bb.*/","\\1",$a);
echo $s;
?> 
输出
2212345