echo数组单元的值不全

[molaifeng]

数组的为

Array
(
    [title] => 初一上册数学测试题
    [id] => 6
    [subject] => 14
    [parts] => [["单选","100",1]]
    [topic] => [["1","100"]]
    [json] => [["6","<p style='text-indent:28px;line-height:200%'><span style=';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>小红做一道数学题“</span><span_style] => ';color:rgb(0,0,0);font-weight:bold;font-size:14px;font-family:
    [#39;'>两个多项式<span_style] => 'font-family:Times New Roman'>A</span><span style='font-family:宋体'>、</span><span style='font-family:Times New Roman'>B</span><span style='font-family:宋体'>，</span><span style='font-family:Times New Roman'>B</span><span style='font-family:宋体'>为</span></span><img src='http://www.exam.com/Public/Js/Home/ueditor/themes/default/images/spacer.gif' word_img='file:///C:\Users\hp\AppData\Local\Temp\ksohtml\wps_clip_image-14927.png' style='background:url(http://www.exam.com/Public/Js/Home/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd' height='22' width='83'/><span style=';color:rgb(0,0,0);font-weight:bold;font-size:14px;font-family:
    [#39;'>，试求<span_style] => 'font-family:Times New Roman'>A B</span><span style='font-family:宋体'>的值</span></span><span style=';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>”。小红误将<span_style] => 'font-family:Times New Roman'>A B</span><span style='font-family:宋体'>看成</span><span style='font-family:Times New Roman'>A</span></span><span style=';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>－</span><span_style] => ';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>B<span_style] => 'font-family:宋体'>，结果答案（计算正确）为</span></span><img src='http://www.exam.com/Public/Js/Home/ueditor/themes/default/images/spacer.gif' word_img='file:///C:\Users\hp\AppData\Local\Temp\ksohtml\wps_clip_image-30836.png' style='background:url(http://www.exam.com/Public/Js/Home/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd' height='22' width='110'/><span style=';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>．</span></p><p_style] => 'text-indent:21px;line-height:200%'><span style=';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>（<span_style] => 'font-family:Times New Roman'>2</span><span style='font-family:宋体'>）求出当</span></span><span style=';color:rgb(0,0,0);font-style:italic;font-size:14px;font-family:
    [#39;'>x</span><span_style] => ';color:rgb(0,0,0);font-size:14px;font-family:
    [#39;'>] => 3<span style='font-family:宋体'>时</span><span style='font-family:Times New Roman'>A B</span><span style='font-family:宋体'>的值</span><span style='font-family:Times New Roman'>.</span></span></p><p><br/></p>",1,"100"]]
    [total] => 100
)

我在打印其中的json键时，却没打印全，显示

[["6","<p style='text-indent:28px;line-height:200%'><span style=';color:rgb(0,0,0);font-size:14px;font-family:

这是为毛，命名数组里都有，可是打印单独的值却显示不全，哪位大大能够指点迷津，不甚感激!!!

[molaifeng]

可能是没有描述清楚

如上图，编辑器里面可以输入字符，我现在是在word文档里复制了一段整理好段落样式的文字，然后异步传到服务器上，json字符串里存储的小题的json信息，可是取json时却出现了问题，于是我在服务器上print_r($_POST),可以显示都传到服务器上了，但是却打印不全json字符串。
后来我又做了个测试，把粘贴过来的段落去掉了样式，这次可以显示全了，是不是字数超过了限制，也不对啊，post好像没有限制的，而且都已经传到服务器上了，为什么就是显示不全呢

[码无边]

请输出var_export($arr)结构;

[molaifeng]

已经找到问题所在了，我是通过ajax提交到服务器的，url形式为 'a='+a+'&b='+b,但是编辑器里里也有连接符&，因此便截断了，所以服务器上便借不全，后来js上加了encodeURIComponent，服务器接的时候用urldecode解码就ok了