var_dump,var_export,print_r
后端开发-php教程
下面的示例看看这三个函数的具体的区别，其中var_dump和var_export比较少用，但他们两者又很相似。所以可以看看：复制代码 代码如下:
<?php
$a = array(1,1,32,322,3433,array(32,232,23232));
$b = 1234;
$c = “alsdfl;asdf”;
$d = ‘a’;
$e = fopen(“slsl.txt”, “r”);
var_dump($a);
echo “
“;
var_dump($b);
echo “
“;
var_dump($c);
echo “
“;
var_dump($d);
echo “
“;
var_dump($e);
echo “
“;
echo “
“;
echo “
“;
echo “
“;
var_export($a);
echo “
“;
var_export($b);
echo “
“;
var_export($c);
echo “
“;
var_export($d);
echo “
“;
var_export($e);
echo “
“;
echo “
“;
echo “
“;
echo “
“;
print_r($a);
echo “
“;
print_r($b);
echo “
“;
print_r($c);
echo “
“;
print_r($d);
echo “
“;
print_r($e);
echo “
“;
传奇支付平台源码,vim与vscode,ubuntu屏幕怎么调节亮度,tomcat 项目结构,r语言+创建sqlite,html引用百度地图插件,前端几个大型框架,python 咸鱼app爬虫,centos php7,山东钢管厂seo文,婚庆公司大气网站模板,网页设计用什么编码,手机端css网页模板下载工具,html页面编辑器,学生成绩管理系统登录界面jsp,wordpress小程序导航收录七技师lzw
输出：复制代码 代码如下:
Warning: fopen(slsl.txt) [function.fopen]: failed to open stream: No such file or directory in E:\mywww\yangtest\base1.php on line 6
array(6) { [0]=> int(1) [1]=> int(1) [2]=> int(32) [3]=> int(322) [4]=> int(3433) [5]=> array(3) { [0]=> int(32) [1]=> int(232) [2]=> int(23232) } }
int(1234)
string(11) “alsdfl;asdf”
string(1) “a”
bool(false)
array ( 0 => 1, 1 => 1, 2 => 32, 3 => 322, 4 => 3433, 5 => array ( 0 => 32, 1 => 232, 2 => 23232, ), )
1234
‘alsdfl;asdf’
‘a’
false
Array ( [0] => 1 [1] => 1 [2] => 32 [3] => 322 [4] => 3433 [5] => Array ( [0] => 32 [1] => 232 [2] => 23232 ) )
1234
alsdfl;asdf
a
生成二维码可带logo源码,安装ubuntu安装崩溃,爬虫的通俗讲解,php 1565,seo信息prlzw
现在可以看到效果了，注意，最后一个不是我没有粘贴过来，而是他本来就没有显示什么东西。微信 红包源码,vscode中jsp的使用,国产ubuntu测评,tomcat宕机重启配置,爬虫数据过滤,php7 兼容性,信息化seo推广有哪些,bc网站源码分享,access 导航模板lzw