要学会调试,这才是最重要的!
<?php
$s = "abc";
preg_match_all("/(a(b(c)))/",$s,$regs);
print_r($regs);
/*
输出
Array
(
[0] => Array
(
[0] => abc
) [1] => Array
(
[0] => abc
) [2] => Array
(
[0] => bc
) [3] => Array
(
[0] => c
))
*/
//或
echo preg_replace("/(a(b(c)))/","\\1-\\2-\\3",$s);
/*
输出
abc-bc-cdef
*/
?>自己看看谁对应谁
<?php
$s = "abc";
preg_match_all("/(a(b(c)))/",$s,$regs);
print_r($regs);
/*
输出
Array
(
[0] => Array
(
[0] => abc
) [1] => Array
(
[0] => abc
) [2] => Array
(
[0] => bc
) [3] => Array
(
[0] => c
))
*/
//或
echo preg_replace("/(a(b(c)))/","\\1-\\2-\\3",$s);
/*
输出
abc-bc-cdef
*/
?>自己看看谁对应谁
解决方案 »
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