simple_html_dom执行出现死循环如何解决？
- WBOY原创
- 2016-07-06 13:51:391176浏览
<code>include('simple_html_dom/simple_html_dom.php');
$list_html = new simple_html_dom();
$list_html->load_file('http://www.yiichina.com/doc/guide/2.0/structure-applications');
var_dump($list_html->find('a.list-group-item',0));exit();
</code>
这段代码执行之后在页面中无限dump数据出来，就像死循环一样如何解决？a.list-group-item元素是肯定存在的。。。
回复内容：
<code>include('simple_html_dom/simple_html_dom.php');
$list_html = new simple_html_dom();
$list_html->load_file('http://www.yiichina.com/doc/guide/2.0/structure-applications');
var_dump($list_html->find('a.list-group-item',0));exit();
</code>
这段代码执行之后在页面中无限dump数据出来，就像死循环一样如何解决？a.list-group-item元素是肯定存在的。。。
用过javascript应该知道，这样dom其实是一棵树，即DOM Tree，每一个DOM节点（node）都会包含其直接父节点（parent node）和节点的序列号方便进行定位和遍历渲染出页面，请想想，嵌套层次如果稍微深一点的话，你var_dump肯定会因为层次太深而无法输出（没有安装xdebug时一般表现为超时），安装xdebug之后，请见：https://xdebug.org/docs/all_settings#var_display_max_depth，一般会输出最多3层的嵌套深度，所以我建议不要使用var_dump去调试simple_html_dom或其simple_html_dom_node的对象，可以安装xdebug进行断点调试，玩点高端的哈，具体怎么调试已经超出本回答范围，请自行百度“xdebug断点调试”。
内容比较多, 评论不让发, 只能发回答了...
输出的数据比较多, 是因为你dump了几个对象 但没到
无限dump数据的程度
<code>class simple_html_dom_node#147 (9) {
public $nodetype =>
int(1)
public $tag =>
string(1) "a"
public $attr =>
array(4) {
'class' =>
string(15) "list-group-item"
'href' =>
string(5) "#w0-1"
'data-toggle' =>
string(8) "collapse"
'data-parent' =>
string(3) "#w0"
}
public $children =>
array(1) {
[0] =>
class simple_html_dom_node#149 (9) {
public $nodetype =>
int(1)
public $tag =>
string(1) "b"
public $attr =>
array(1) {
...
}
public $children =>
array(0) {
...
}
public $nodes =>
array(0) {
...
}
public $parent =>
...
public $_ =>
array(5) {
...
}
public $tag_start =>
int(3100)
private $dom =>
class simple_html_dom#3 (23) {
...
}
}
}
public $nodes =>
array(2) {
[0] =>
class simple_html_dom_node#148 (9) {
public $nodetype =>
int(3)
public $tag =>
string(4) "text"
public $attr =>
array(0) {
...
}
public $children =>
array(0) {
...
}
public $nodes =>
array(0) {
...
}
public $parent =>
...
public $_ =>
array(1) {
...
}
public $tag_start =>
int(0)
private $dom =>
class simple_html_dom#3 (23) {
...
}
}
[1] =>
class simple_html_dom_node#149 (9) {
public $nodetype =>
int(1)
public $tag =>
string(1) "b"
public $attr =>
array(1) {
...
}
public $children =>
array(0) {
...
}
public $nodes =>
array(0) {
...
}
public $parent =>
...
public $_ =>
array(5) {
...
}
public $tag_start =>
int(3100)
private $dom =>
class simple_html_dom#3 (23) {
...
}
}
}
public $parent =>
class simple_html_dom_node#146 (9) {
public $nodetype =>
int(1)
public $tag =>
string(3) "div"
public $attr =>
array(2) {
'id' =>
string(2) "w0"
'class' =>
string(10) "list-group"
}
public $children =>
array(32) {
[0] =>
...
[1] =>
class simple_html_dom_node#150 (9) {
...
}
[2] =>
class simple_html_dom_node#157 (9) {
...
}
[3] =>
class simple_html_dom_node#160 (9) {
...
}
[4] =>
class simple_html_dom_node#182 (9) {
...
}
[5] =>
class simple_html_dom_node#185 (9) {
...
}
[6] =>
class simple_html_dom_node#222 (9) {
...
}
[7] =>
class simple_html_dom_node#225 (9) {
...
}
[8] =>
class simple_html_dom_node#250 (9) {
...
}
[9] =>
class simple_html_dom_node#253 (9) {
...
}
[10] =>
class simple_html_dom_node#281 (9) {
...
}
[11] =>
class simple_html_dom_node#284 (9) {
...
}
[12] =>
class simple_html_dom_node#309 (9) {
...
}
[13] =>
class simple_html_dom_node#312 (9) {
...
}
[14] =>
class simple_html_dom_node#328 (9) {
...
}
[15] =>
class simple_html_dom_node#331 (9) {
...
}
[16] =>
class simple_html_dom_node#353 (9) {
...
}
[17] =>
class simple_html_dom_node#356 (9) {
...
}
[18] =>
class simple_html_dom_node#372 (9) {
...
}
[19] =>
class simple_html_dom_node#375 (9) {
...
}
[20] =>
class simple_html_dom_node#391 (9) {
...
}
[21] =>
class simple_html_dom_node#394 (9) {
...
}
[22] =>
class simple_html_dom_node#422 (9) {
...
}
[23] =>
class simple_html_dom_node#425 (9) {
...
}
[24] =>
class simple_html_dom_node#435 (9) {
...
}
[25] =>
class simple_html_dom_node#438 (9) {
...
}
[26] =>
class simple_html_dom_node#457 (9) {
...
}
[27] =>
class simple_html_dom_node#460 (9) {
...
}
[28] =>
class simple_html_dom_node#491 (9) {
...
}
[29] =>
class simple_html_dom_node#494 (9) {
...
}
[30] =>
class simple_html_dom_node#501 (9) {
...
}
[31] =>
class simple_html_dom_node#504 (9) {
...
}
}
public $nodes =>
array(47) {
[0] =>
...
[1] =>
class simple_html_dom_node#150 (9) {
...
}
[2] =>
class simple_html_dom_node#156 (9) {
...
}
[3] =>
class simple_html_dom_node#157 (9) {
...
}
[4] =>
class simple_html_dom_node#160 (9) {
...
}
[5] =>
class simple_html_dom_node#181 (9) {
...
}
[6] =>
class simple_html_dom_node#182 (9) {
...
}
[7] =>
class simple_html_dom_node#185 (9) {
...
}
[8] =>
class simple_html_dom_node#221 (9) {
...
}
[9] =>
class simple_html_dom_node#222 (9) {
...
}
[10] =>
class simple_html_dom_node#225 (9) {
...
}
[11] =>
class simple_html_dom_node#249 (9) {
...
}
[12] =>
class simple_html_dom_node#250 (9) {
...
}
[13] =>
class simple_html_dom_node#253 (9) {
...
}
[14] =>
class simple_html_dom_node#280 (9) {
...
}
[15] =>
class simple_html_dom_node#281 (9) {
...
}
[16] =>
class simple_html_dom_node#284 (9) {
...
}
[17] =>
class simple_html_dom_node#308 (9) {
...
}
[18] =>
class simple_html_dom_node#309 (9) {
...
}
[19] =>
class simple_html_dom_node#312 (9) {
...
}
[20] =>
class simple_html_dom_node#327 (9) {
...
}
[21] =>
class simple_html_dom_node#328 (9) {
...
}
[22] =>
class simple_html_dom_node#331 (9) {
...
}
[23] =>
class simple_html_dom_node#352 (9) {
...
}
[24] =>
class simple_html_dom_node#353 (9) {
...
}
[25] =>
class simple_html_dom_node#356 (9) {
...
}
[26] =>
class simple_html_dom_node#371 (9) {
...
}
[27] =>
class simple_html_dom_node#372 (9) {
...
}
[28] =>
class simple_html_dom_node#375 (9) {
...
}
[29] =>
class simple_html_dom_node#390 (9) {
...
}
[30] =>
class simple_html_dom_node#391 (9) {
...
}
[31] =>
class simple_html_dom_node#394 (9) {
...
}
[32] =>
class simple_html_dom_node#421 (9) {
...
}
[33] =>
class simple_html_dom_node#422 (9) {
...
}
[34] =>
class simple_html_dom_node#425 (9) {
...
}
[35] =>
class simple_html_dom_node#434 (9) {
...
}
[36] =>
class simple_html_dom_node#435 (9) {
...
}
[37] =>
class simple_html_dom_node#438 (9) {
...
}
[38] =>
class simple_html_dom_node#456 (9) {
...
}
[39] =>
class simple_html_dom_node#457 (9) {
...
}
[40] =>
class simple_html_dom_node#460 (9) {
...
}
[41] =>
class simple_html_dom_node#490 (9) {
...
}
[42] =>
class simple_html_dom_node#491 (9) {
...
}
[43] =>
class simple_html_dom_node#494 (9) {
...
}
[44] =>
class simple_html_dom_node#500 (9) {
...
}
[45] =>
class simple_html_dom_node#501 (9) {
...
}
[46] =>
class simple_html_dom_node#504 (9) {
...
}
}
public $parent =>
class simple_html_dom_node#144 (9) {
public $nodetype =>
int(1)
public $tag =>
string(3) "div"
public $attr =>
array(1) {
...
}
public $children =>
array(1) {
...
}
public $nodes =>
array(3) {
...
}
public $parent =>
class simple_html_dom_node#142 (9) {
...
}
public $_ =>
array(5) {
...
}
public $tag_start =>
int(2936)
private $dom =>
class simple_html_dom#3 (23) {
...
}
}
public $_ =>
array(5) {
[0] =>
int(143)
[2] =>
array(2) {
...
}
[3] =>
array(2) {
...
}
[7] =>
string(0) ""
[1] =>
int(513)
}
public $tag_start =>
int(2962)
private $dom =>
class simple_html_dom#3 (23) {
public $root =>
class simple_html_dom_node#2 (9) {
...
}
public $nodes =>
array(1787) {
...
}
public $callback =>
NULL
public $lowercase =>
bool(true)
public $original_size =>
int(48883)
public $size =>
int(46297)
protected $pos =>
int(46297)
protected $doc =>
string(46297) " <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="csrf-param" content="_csrf"> <meta name="csrf-token" content="Lld4a0wtQW9gBz46Hlw0VxcxEjwYRytCQyVBPzxvKR1tJEkBOl4WDQ=="> <title>搴旂敤涓讳綋 - Yii 2.0 鏉冨▉鎸囧崡 - 鏂囨。 - Yii Framework 涓枃绀惧尯</title> <meta name="keywords" content="Yii Framewok, 鏉冨▉鎸囧崡"> <meta name="description" content="Yi" ... protected>
NULL
protected $cursor =>
int(1787)
protected $parent =>
class simple_html_dom_node#2 (9) {
...
}
protected $noise =>
array(90) {
...
}
protected $token_blank =>
string(4) "
"
protected $token_equal =>
string(4) " =/>"
protected $token_slash =>
string(6) " />
"
protected $token_attr =>
string(2) " >"
public $_charset =>
string(5) "UTF-8"
public $_target_charset =>
string(5) "UTF-8"
protected $default_br_text =>
string(2) "
"
public $default_span_text =>
string(1) " "
protected $self_closing_tags =>
array(9) {
...
}
protected $block_tags =>
array(6) {
...
}
protected $optional_closing_tags =>
array(11) {
...
}
}
}
public $_ =>
array(5) {
[0] =>
int(144)
[2] =>
array(4) {
[0] =>
int(0)
[1] =>
int(0)
[2] =>
int(0)
[3] =>
int(0)
}
[3] =>
array(4) {
[0] =>
array(3) {
...
}
[1] =>
array(3) {
...
}
[2] =>
array(3) {
...
}
[3] =>
array(3) {
...
}
}
[7] =>
string(0) ""
[1] =>
int(147)
}
public $tag_start =>
int(2994)
private $dom =>
class simple_html_dom#3 (23) {
public $root =>
class simple_html_dom_node#2 (9) {
public $nodetype =>
int(5)
public $tag =>
string(4) "root"
public $attr =>
array(0) {
...
}
public $children =>
array(2) {
...
}
public $nodes =>
array(4) {
...
}
public $parent =>
NULL
public $_ =>
array(2) {
...
}
public $tag_start =>
int(0)
private $dom =>
...
}
public $nodes =>
array(1787) {
[0] =>
class simple_html_dom_node#2 (9) {
...
}
[1] =>
class simple_html_dom_node#4 (9) {
...
}
[2] =>
class simple_html_dom_node#5 (9) {
...
}
[3] =>
class simple_html_dom_node#6 (9) {
...
}
[4] =>
class simple_html_dom_node#7 (9) {
...
}
[5] =>
class simple_html_dom_node#8 (9) {
...
}
[6] =>
class simple_html_dom_node#9 (9) {
...
}
[7] =>
class simple_html_dom_node#10 (9) {
...
}
[8] =>
class simple_html_dom_node#11 (9) {
...
}
[9] =>
class simple_html_dom_node#12 (9) {
...
}
[10] =>
class simple_html_dom_node#13 (9) {
...
}
[11] =>
class simple_html_dom_node#14 (9) {
...
}
[12] =>
class simple_html_dom_node#15 (9) {
...
}
[13] =>
class simple_html_dom_node#16 (9) {
...
}
[14] =>
class simple_html_dom_node#17 (9) {
...
}
[15] =>
class simple_html_dom_node#18 (9) {
...
}
[16] =>
class simple_html_dom_node#19 (9) {
...
}
[17] =>
class simple_html_dom_node#20 (9) {
...
}
[18] =>
class simple_html_dom_node#21 (9) {
...
}
[19] =>
class simple_html_dom_node#22 (9) {
...
}
[20] =>
class simple_html_dom_node#23 (9) {
...
}
[21] =>
class simple_html_dom_node#24 (9) {
...
}
[22] =>
class simple_html_dom_node#25 (9) {
...
}
[23] =>
class simple_html_dom_node#26 (9) {
...
}
[24] =>
class simple_html_dom_node#27 (9) {
...
}
[25] =>
class simple_html_dom_node#28 (9) {
...
}
[26] =>
class simple_html_dom_node#29 (9) {
...
}
[27] =>
class simple_html_dom_node#30 (9) {
...
}
[28] =>
class simple_html_dom_node#31 (9) {
...
}
[29] =>
class simple_html_dom_node#32 (9) {
...
}
[30] =>
class simple_html_dom_node#33 (9) {
...
}
[31] =>
class simple_html_dom_node#34 (9) {
...
}
[32] =>
class simple_html_dom_node#35 (9) {
...
}
[33] =>
class simple_html_dom_node#36 (9) {
...
}
[34] =>
class simple_html_dom_node#37 (9) {
...
}
[35] =>
class simple_html_dom_node#38 (9) {
...
}
[36] =>
class simple_html_dom_node#39 (9) {
...
}
[37] =>
class simple_html_dom_node#40 (9) {
...
}
[38] =>
class simple_html_dom_node#41 (9) {
...
}
[39] =>
class simple_html_dom_node#42 (9) {
...
}
[40] =>
class simple_html_dom_node#43 (9) {
...
}
[41] =>
class simple_html_dom_node#44 (9) {
...
}
[42] =>
class simple_html_dom_node#45 (9) {
...
}
[43] =>
class simple_html_dom_node#46 (9) {
...
}
[44] =>
class simple_html_dom_node#47 (9) {
...
}
[45] =>
class simple_html_dom_node#48 (9) {
...
}
[46] =>
class simple_html_dom_node#49 (9) {
...
}
[47] =>
class simple_html_dom_node#50 (9) {
...
}
[48] =>
class simple_html_dom_node#51 (9) {
...
}
[49] =>
class simple_html_dom_node#52 (9) {
...
}
[50] =>
class simple_html_dom_node#53 (9) {
...
}
[51] =>
class simple_html_dom_node#54 (9) {
...
}
[52] =>
class simple_html_dom_node#55 (9) {
...
}
[53] =>
class simple_html_dom_node#56 (9) {
...
}
[54] =>
class simple_html_dom_node#57 (9) {
...
}
[55] =>
class simple_html_dom_node#58 (9) {
...
}
[56] =>
class simple_html_dom_node#59 (9) {
...
}
[57] =>
class simple_html_dom_node#60 (9) {
...
}
[58] =>
class simple_html_dom_node#61 (9) {
...
}
[59] =>
class simple_html_dom_node#62 (9) {
...
}
[60] =>
class simple_html_dom_node#63 (9) {
...
}
[61] =>
class simple_html_dom_node#64 (9) {
...
}
[62] =>
class simple_html_dom_node#65 (9) {
...
}
[63] =>
class simple_html_dom_node#66 (9) {
...
}
[64] =>
class simple_html_dom_node#67 (9) {
...
}
[65] =>
class simple_html_dom_node#68 (9) {
...
}
[66] =>
class simple_html_dom_node#69 (9) {
...
}
[67] =>
class simple_html_dom_node#70 (9) {
...
}
[68] =>
class simple_html_dom_node#71 (9) {
...
}
[69] =>
class simple_html_dom_node#72 (9) {
...
}
[70] =>
class simple_html_dom_node#73 (9) {
...
}
[71] =>
class simple_html_dom_node#74 (9) {
...
}
[72] =>
class simple_html_dom_node#75 (9) {
...
}
[73] =>
class simple_html_dom_node#76 (9) {
...
}
[74] =>
class simple_html_dom_node#77 (9) {
...
}
[75] =>
class simple_html_dom_node#78 (9) {
...
}
[76] =>
class simple_html_dom_node#79 (9) {
...
}
[77] =>
class simple_html_dom_node#80 (9) {
...
}
[78] =>
class simple_html_dom_node#81 (9) {
...
}
[79] =>
class simple_html_dom_node#82 (9) {
...
}
[80] =>
class simple_html_dom_node#83 (9) {
...
}
[81] =>
class simple_html_dom_node#84 (9) {
...
}
[82] =>
class simple_html_dom_node#85 (9) {
...
}
[83] =>
class simple_html_dom_node#86 (9) {
...
}
[84] =>
class simple_html_dom_node#87 (9) {
...
}
[85] =>
class simple_html_dom_node#88 (9) {
...
}
[86] =>
class simple_html_dom_node#89 (9) {
...
}
[87] =>
class simple_html_dom_node#90 (9) {
...
}
[88] =>
class simple_html_dom_node#91 (9) {
...
}
[89] =>
class simple_html_dom_node#92 (9) {
...
}
[90] =>
class simple_html_dom_node#93 (9) {
...
}
[91] =>
class simple_html_dom_node#94 (9) {
...
}
[92] =>
class simple_html_dom_node#95 (9) {
...
}
[93] =>
class simple_html_dom_node#96 (9) {
...
}
[94] =>
class simple_html_dom_node#97 (9) {
...
}
[95] =>
class simple_html_dom_node#98 (9) {
...
}
[96] =>
class simple_html_dom_node#99 (9) {
...
}
[97] =>
class simple_html_dom_node#100 (9) {
...
}
[98] =>
class simple_html_dom_node#101 (9) {
...
}
[99] =>
class simple_html_dom_node#102 (9) {
...
}
[100] =>
class simple_html_dom_node#103 (9) {
...
}
[101] =>
class simple_html_dom_node#104 (9) {
...
}
[102] =>
class simple_html_dom_node#105 (9) {
...
}
[103] =>
class simple_html_dom_node#106 (9) {
...
}
[104] =>
class simple_html_dom_node#107 (9) {
...
}
[105] =>
class simple_html_dom_node#108 (9) {
...
}
[106] =>
class simple_html_dom_node#109 (9) {
...
}
[107] =>
class simple_html_dom_node#110 (9) {
...
}
[108] =>
y(3) {
...
}
'th' =>
array(1) {
...
}
'td' =>
array(1) {
...
}
'li' =>
array(1) {
...
}
'dt' =>
array(2) {
...
}
'dd' =>
array(2) {
...
}
'dl' =>
array(2) {
...
}
'p' =>
array(1) {
...
}
'nobr' =>
array(1) {
...
}
'b' =>
array(1) {
...
}
'option' =>
array(1) {
...
}
}
}
}</code>
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