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php格式输出文件var_export函数实例,
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php格式输出文件var_export函数实例,

Jun 13, 2016 am 09:21 AM
export php var function

php格式输出文件var_export函数实例,

本文实例讲述了php格式输出文件var_export函数的用法。分享给大家供大家参考。具体如下:

var_export:php 4 >= 4.2.0, php 5

var_export -- 输出或返回一个变量的字符串表示.

描述:mixed var_export (mixed expression [,bool return])

此函数返回关于传递给该函数的变量的结构信息,它和 var_dump() 类似,不同的是其返回的表示是合法的 php 代码,您可以通过将函数的第二个参数设置为 true,从而返回变量的表示.

示例:

复制代码 代码如下:

var_export(array('a','b',array('aa','bb','cc')))//这种与var_dump没什么区别
[code]$var =var_export(array('a','b',array('aa','bb','cc')),true)//加上true后,不会再打印出来,而是给了一个变量,这样就可以直接输出;
echo $var;//此时输出来的形式与var_dump()打印的相似.

示例2,代码如下:

复制代码 代码如下:

$data = array ('name' => 'abc', 'job' => 'programmer','a'=>array('aa','cc','bb')); 
$data = var_export($data,true); 
echo $data;

输出形式如下: 

复制代码 代码如下:

array ( 
'name' => 'abc', 
'job' => 'programmer', 
'a' =>
array ( 
0 => 'aa', 
1 => 'cc', 
2 => 'bb', 
), 
)

希望本文所述对大家的PHP程序设计有所帮助。

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