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preg_replace_callback替换preg_replace

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2016-06-23 13:51:491174browse

$tem =   $arr['invoice_type'];
echo "

";  <br> print_r($tem);  <br> 输出  <br> a:2:{s:4:"type";a:3:{i:0;s:8:"个人发票";i:1;s:8:"企业发票";i:2;s:0:"";}s:4:"rate";a:3:{i:0;d:6;i:1;d:6;i:2;d:0;}}  <br>  <br> $teem []= preg_replace('!s:(\d+):"(.*?)";!se', "'s:'.strlen('$2').':\"$2\";'", $arr['invoice_type'] );  <br> echo "<pre class="brush:php;toolbar:false">";  <br> print_r($teem);  <br> 输出  <br> Array  <br> (  <br>     [0] => a:2:{'s:'.strlen('type').':"type";'a:3:{i:0;'s:'.strlen('个人发票').':"个人发票";'i:1;'s:'.strlen('企业发票').':"企业发票";'i:2;'s:'.strlen('').':"";'}'s:'.strlen('rate').':"rate";'a:3:{i:0;d:6;i:1;d:6;i:2;d:0;}}  <br> )  <br>  <br> $teemm []= preg_replace_callback('!s:(\d+):"(.*?)";!s', function ($matches) {return strlen('$2').':\"$2\";';}, $arr['invoice_type'] );  <br> echo "<pre class="brush:php;toolbar:false">";  <br> print_r($teemm);  <br> 输出  <br> Array  <br> (  <br>     [0] => a:2:{2:\"$2\";a:3:{i:0;2:\"$2\";i:1;2:\"$2\";i:2;2:\"$2\";}2:\"$2\";a:3:{i:0;d:6;i:1;d:6;i:2;d:0;}}  <br> )  <br>  <br> 如何让preg_replace_callback输出的信息和preg_replace输出的一样  <p>  </p>  <br> <h2>回复讨论(解决方案)</h2> <p class="sougouAnswer">  不知道你要干什么  <br> 实例的结果并不对! </p> <p class="sougouAnswer">  第二个输出弄错了是下面的  <br> $teem []= preg_replace('!s:(\d+):"(.*?)";!se', "'s:'.strlen('$2').':\"$2\";'", $arr['invoice_type'] );  <br> echo "</p><pre class="brush:php;toolbar:false">";  <br> print_r($teem);  <br> 输出  <br> Array  <br> (  <br>     [0] => a:2:{s:4:"type";a:3:{i:0;s:8:"个人发票";i:1;s:8:"企业发票";i:2;s:0:"";}s:4:"rate";a:3:{i:0;d:6;i:1;d:6;i:2;d:0;}}  <br> )  <p class="sougouAnswer">  </p><p class="yy">   不知道你要干什么   <br> 实例的结果并不对!  </p>  <br>  <br> 第二个输出弄错了是下面的  <br> $teem []= preg_replace('!s:(\d+):"(.*?)";!se', "'s:'.strlen('$2').':\"$2\";'", $arr['invoice_type'] );  <br> echo "<pre class="brush:php;toolbar:false">";  <br> print_r($teem);  <br> 输出  <br> Array  <br> (  <br>     [0] => a:2:{s:4:"type";a:3:{i:0;s:8:"个人发票";i:1;s:8:"企业发票";i:2;s:0:"";}s:4:"rate";a:3:{i:0;d:6;i:1;d:6;i:2;d:0;}}  <br> )   <p class="sougouAnswer">  <pre class="sycode" name="code">$s = preg_replace_callback('/s:\d+:"(.+?)";/s',		function($r) {			$n = strlen($r[1]);			return "s:$n:\"$r[1]\";";		}, $s);

$s = preg_replace_callback('/s:\d+:"(.+?)";/s',		function($r) {			$n = strlen($r[1]);			return "s:$n:\"$r[1]\";";		}, $s);



大神我按照你的改了输出数据是这样
代码
 $teem = preg_replace_callback('/s:\d+:"(.+?)";/s',
            function($r) {
                $n = strlen($r[1]);
                return "s:$n:\"$r[1]\";";
            }, $arr['invoice_type'] );
        echo "
";  <br>         print_r($teem);  <br> 输出  <br> a:2:{s:4:"type";a:3:{i:0;s:8:"个人发票";i:1;s:8:"企业发票";i:2;s:12:"";}s:4:"rate";a:3:{i:0;d:6;i:1;d:6;i:2;d:0;}}  <br>  <br> 企业发票后边S:0:""   变为了s:12:""  多了12长度,这个怎么来的  <br>  <p class="sougouAnswer">  没考虑值为空的情况  <br> 把 '/s:\d+:"(.+?)";/s'   <br> 改为 '/s:\d+:"(.*?)";/s' </p> <p class="sougouAnswer">  </p><p class="yy">   没考虑值为空的情况   <br> 把 '/s:\d+:"(.+?)";/s'    <br> 改为 '/s:\d+:"(.*?)";/s'  </p>  <br>  <br> 万分感谢 
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