Thinkphp模板中if嵌套层级过多的问题，嵌套3级就报错，取消层级限
制
解决此问题有两种办法：1、第三层if换成eq或者原⽣<?php 'abc';> 2、修改Tp核⼼配置⽂件1、第三层if换成eq或者原⽣<?php 'abc';>
如下图<eq name="uid" value="">未登录状态下<else />登录状态下 </eq>
name为条件和value为值
2、修改TP核⼼配置⽂件，路径如下
thinkphp/ThinkPHP/Library/Think/Template/TagLib/Cx.class.php
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 thinkphp All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( /licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail>
// +----------------------------------------------------------------------
namespace Think\Template\TagLib;
use Think\Template\TagLib;
/**
* CX标签库解析类
*/
class Cx extends TagLib
{
// 标签定义
protected $tags = array(
// 标签定义： attr 属性列表 close 是否闭合（0 或者1 默认1） alias 标签别名 level 嵌套层次
'php' => array(),
'volist' => array('attr' => 'name,id,offset,length,key,mod', 'level' => 3, 'alias' => 'iterate'),
'foreach' => array('attr' => 'name,item,key', 'level' => 3),
'if' => array('attr' => 'condition', 'level' => 2),
'elseif' => array('attr' => 'condition', 'close' => 0),
'else' => array('attr' => '', 'close' => 0),
'switch' => array('attr' => 'name', 'level' => 2),
'case' => array('attr' => 'value,break'),
'default' => array('attr' => '', 'close' => 0),
'compare' => array('attr' => 'name,value,type', 'level' => 3, 'alias' => 'eq,equal,notequal,neq,gt,lt,egt,elt,heq,nheq'),
'range' => array('attr' => 'name,value,type', 'level' => 3, 'alias' => 'in,notin,between,notbetween'),
'empty' => array('attr' => 'name', 'level' => 3),
'notempty' => array('attr' => 'name', 'level' => 3),
'present' => array('attr' => 'name', 'level' => 3),
'notpresent' => array('attr' => 'name', 'level' => 3),
'defined' => array('attr' => 'name', 'level' => 3),
'notdefined' => array('attr' => 'name', 'level' => 3),
'import' => array('attr' => 'file,href,type,value,basepath', 'close' => 0, 'alias' => 'load,css,js'),
'assign' => array('attr' => 'name,value', 'close' => 0),
'define' => array('attr' => 'name,value', 'close' => 0),
'for' => array('attr' => 'start,end,name,comparison,step', 'level' => 3),
);
/**
* php标签解析
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _php($tag, $content)
{
$parseStr = '<?php ' . $content . ' ?>';
return $parseStr;
}
/**
* volist标签解析循环输出数据集
* 格式：
* <volist name="userList" id="user" empty="" >
* {user.username}
* {ail}
* </volist>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string|void
$name = $tag['name'];
$id = $tag['id'];
$empty = isset($tag['empty']) ? $tag['empty'] : '';
$key = !empty($tag['key']) ? $tag['key'] : 'i';
$mod = isset($tag['mod']) ? $tag['mod'] : '2';
/
/ 允许使⽤函数设定数据集 <volist name=":fun('arg')" id="vo">{$vo.name}</volist>
$parseStr = '<?php ';
if (0 === strpos($name, ':')) {
$parseStr .= '$_result=' . substr($name, 1) . ';';
$name = '$_result';
} else {
$name = $this->autoBuildVar($name);
}
$parseStr .= 'if(is_array(' . $name . ')): $' . $key . ' = 0;';
if (isset($tag['length']) && '' != $tag['length']) {
$parseStr .= ' $__LIST__ = array_slice(' . $name . ',' . $tag['offset'] . ',' . $tag['length'] . ',true);'; } elseif (isset($tag['offset']) && '' != $tag['offset']) {
$parseStr .= ' $__LIST__ = array_slice(' . $name . ',' . $tag['offset'] . ',null,true);';
} else {
$parseStr .= ' $__LIST__ = ' . $name . ';';
}
$parseStr .= 'if( count($__LIST__)==0 ) : echo "' . $empty . '" ;';
$parseStr .= 'else: ';
$parseStr .= 'foreach($__LIST__ as $key=>$' . $id . '): ';
$parseStr .= '$mod = ($' . $key . ' % ' . $mod . ' );';
$parseStr .= '++$' . $key . ';?>';
$parseStr .= $this->tpl->parse($content);
$parseStr .= '<?php endforeach; endif; else: echo "' . $empty . '" ;endif; ?>';
if (!empty($parseStr)) {
return $parseStr;
}
return;
}
/**
* foreach标签解析循环输出数据集
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string|void
*/
public function _foreach($tag, $content)
{
$name = $tag['name'];
$item = $tag['item'];
$key = !empty($tag['key']) ? $tag['key'] : 'key';
$name = $this->autoBuildVar($name);
$parseStr = '<?php if(is_array(' . $name . ')): foreach(' . $name . ' as $' . $key . '=>$' . $item . '): ?>'; $parseStr .= $this->tpl->parse($content);
$parseStr .= '<?php endforeach; endif; ?>';
if (!empty($parseStr)) {
return $parseStr;
}
return;
}
/**
* if标签解析
* 格式：
* <if condition=" $a eq 1" >
* <elseif condition="$a eq 2" />
* <else />
* </if>
* 表达式⽀持 eq neq gt egt lt elt == > >= < <= or and || &&
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _if($tag, $content)
{
$condition = $this->parseCondition($tag['condition']);
$parseStr = '<?php if(' . $condition . '): ?>' . $content . '<?php endif; ?>';
return $parseStr;
}
/
**
* else标签解析
* 格式：见if标签
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _elseif($tag, $content)
{
$condition = $this->parseCondition($tag['condition']);
$parseStr = '<?php elseif(' . $condition . '): ?>';
return $parseStr;
}
/**
* else标签解析
* @access public
* @param array $tag 标签属性
public function _else($tag)
{
$parseStr = '<?php else: ?>';
return $parseStr;
}
/**
* switch标签解析
* 格式：
* <switch name="a.name" >
* <case value="1" break="false">1</case>
* <case value="2" >2</case>
* <default />other
* </switch>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _switch($tag, $content)
{
$name = $tag['name'];
$varArray = explode('|', $name);
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if (count($varArray) > 0) {
$name = $this->tpl->parseVarFunction($name, $varArray);
}
$parseStr = '<?php switch(' . $name . '): ?>' . $content . '<?php endswitch;?>'; return $parseStr;
}
/**
* case标签解析需要配合switch才有效
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _case($tag, $content)
{
$value = $tag['value'];
if ('$' == substr($value, 0, 1)) {
$varArray = explode('|', $value);
$value = array_shift($varArray);
$value = $this->autoBuildVar(substr($value, 1));
if (count($varArray) > 0) {
$value = $this->tpl->parseVarFunction($value, $varArray);
}
$value = 'case ' . $value . ': ';
} elseif (strpos($value, '|')) {
$values = explode('|', $value);
$value = '';
foreach ($values as $val) {
$value .= 'case "' . addslashes($val) . '": ';
}
} else {
$value = 'case "' . $value . '": ';
}
$parseStr = '<?php ' . $value . ' ?>' . $content;
$isBreak = isset($tag['break']) ? $tag['break'] : '';
if ('' == $isBreak || $isBreak) {
$parseStr .= '<?php break;?>';
}
return $parseStr;
}
/**
* default标签解析需要配合switch才有效
* 使⽤： <default />ddfdf
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _default($tag)
{
$parseStr = '<?php default: ?>';
return $parseStr;
}
/**
* compare标签解析
* ⽤于值的⽐较⽀持 eq neq gt lt egt elt heq nheq 默认是eq
* 格式： <compare name="" type="eq" value="" >content</compare>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _compare($tag, $content, $type = 'eq')
{
$name = $tag['name'];
$value = $tag['value'];
$type = isset($tag['type']) ? $tag['type'] : $type;
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if (count($varArray) > 0) {
$name = $this->tpl->parseVarFunction($name, $varArray);
}
if ('$' == substr($value, 0, 1)) {
$value = $this->autoBuildVar(substr($value, 1));
} else {
$value = '"' . $value . '"';
}
$parseStr = '<?php if((' . $name . ') ' . $type . ' ' . $value . '): ?>' . $content . '<?php endif; ?>';
return $parseStr;
}
public function _eq($tag, $content)
{
return $this->_compare($tag, $content, 'eq');
}
public function _equal($tag, $content)
{
return $this->_compare($tag, $content, 'eq');
}
public function _neq($tag, $content)
{
return $this->_compare($tag, $content, 'neq');
}
public function _notequal($tag, $content)
{
return $this->_compare($tag, $content, 'neq');
}
public function _gt($tag, $content)
{
return $this->_compare($tag, $content, 'gt');
}
public function _lt($tag, $content)
{
return $this->_compare($tag, $content, 'lt');
}
public function _egt($tag, $content)
{
return $this->_compare($tag, $content, 'egt');
}
public function _elt($tag, $content)
{
return $this->_compare($tag, $content, 'elt');
}
public function _heq($tag, $content)
{
return $this->_compare($tag, $content, 'heq');
}
public function _nheq($tag, $content)
{
return $this->_compare($tag, $content, 'nheq');
}
/**
* range标签解析
* 如果某个变量存在于某个范围则输出内容 type= in 表⽰在范围内否则表⽰在范围外
* 格式： <range name="var|function" value="val" type='in|notin' >content</range>
* example: <range name="a" value="1,2,3" type='in' >content</range>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @param string $type ⽐较类型
* @return string
*/
public function _range($tag, $content, $type = 'in')
{
$name = $tag['name'];
$value = $tag['value'];
$varArray = explode('|', $name);
$name = array_shift($varArray);
$name = $this->autoBuildVar($name);
if (count($varArray) > 0) {
$name = $this->tpl->parseVarFunction($name, $varArray);
}
$type = isset($tag['type']) ? $tag['type'] : $type;
if ('$' == substr($value, 0, 1)) {
thinkphp3$value = $this->autoBuildVar(substr($value, 1));
$str = 'is_array(' . $value . ')?' . $value . ':explode(\',\',' . $value . ')';
} else {
$value = '"' . $value . '"';
$str = 'explode(\',\',' . $value . ')';
}
if ('between' == $type) {
$parseStr = '<?php $_RANGE_VAR_=' . $str . ';if(' . $name . '>= $_RANGE_VAR_[0] && ' . $name . '<= $_RANGE_VAR_[1]):?>' . $content . '<?php endif; ?>'; } elseif ('notbetween' == $type) {
$parseStr = '<?php $_RANGE_VAR_=' . $str . ';if(' . $name . '<$_RANGE_VAR_[0] || ' . $name . '>$_RANGE_VAR_[1]):?>' . $content . '<?php endif; ?>';
} else {
$fun = ('in' == $type) ? 'in_array' : '!in_array';
$parseStr = '<?php if(' . $fun . '((' . $name . '), ' . $str . ')): ?>' . $content . '<?php endif; ?>';
}
return $parseStr;
public function _in($tag, $content)
{
return $this->_range($tag, $content, 'in');
}
// range标签的别名⽤于notin判断
public function _notin($tag, $content)
{
return $this->_range($tag, $content, 'notin');
}
public function _between($tag, $content)
{
return $this->_range($tag, $content, 'between');
}
public function _notbetween($tag, $content)
{
return $this->_range($tag, $content, 'notbetween');
}
/**
* present标签解析
* 如果某个变量已经设置则输出内容
* 格式： <present name="" >content</present>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _present($tag, $content)
{
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = '<?php if(isset(' . $name . ')): ?>' . $content . '<?php endif; ?>';
return $parseStr;
}
/**
* notpresent标签解析
* 如果某个变量没有设置，则输出内容
* 格式： <notpresent name="" >content</notpresent>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _notpresent($tag, $content)
{
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = '<?php if(!isset(' . $name . ')): ?>' . $content . '<?php endif; ?>';
return $parseStr;
}
/**
* empty标签解析
* 如果某个变量为empty 则输出内容
* 格式： <empty name="" >content</empty>
* @access public
* @param array $tag 标签属性
* @param string $content 标签内容
* @return string
*/
public function _empty($tag, $content)
{
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = '<?php if(empty(' . $name . ')): ?>' . $content . '<?php endif; ?>';
return $parseStr;
}
public function _notempty($tag, $content)
{
$name = $tag['name'];
$name = $this->autoBuildVar($name);
$parseStr = '<?php if(!empty(' . $name . ')): ?>' . $content . '<?php endif; ?>'; return $parseStr;
}
/**
* 判断是否已经定义了该常量
* <defined name='TXT'>已定义</defined>
* @param <type> $attr
* @param <type> $content
* @return string
*/
public function _defined($tag, $content)
{
$name = $tag['name'];
$parseStr = '<?php if(defined("' . $name . '")): ?>' . $content . '<?php endif; ?>'; return $parseStr;
}
public function _notdefined($tag, $content)
{
$name = $tag['name'];
$parseStr = '<?php if(!defined("' . $name . '")): ?>' . $content . '<?php endif; ?>'; return $parseStr;
}
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