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Website screenshots
					Is there any way of taking a screenshot of a website in PHP, then saving it to a file?
                    
                    
                        
                            
                                
                                        26 Answers
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							无社交不商业,Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术
					...司,居然打败了如此强大的出租车公司。
这说明了一个问题:就是连接比拥有更加重要。
连接是一种关系,而你拥有的只是物质,也就是说,现在的世界,关系比物质更重要。
讲到这里,我们还没有真正了解互联网...				
				
				
							Is there a wikipedia API just for retrieve content summary?
					...ow's intro in plain text:
Using page title:
https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro&explaintext&redirects=1&titles=Stack%20Overflow
or use pageids
https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&e...				
				
				
							select count(*) from table of mysql in php
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                @eichertc the php interpreter has the variable always internal, as he needs to have the result in memory one way or the other.  So your way just makes the code worser to read and maintain, IMHO.
                
– Tom
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							Should everything really be a bundle in Symfony 2.x?
					...ces to group related entities together, for example, src/Vendor/User/Group.php. In this case, the entity's name is Model:User\Group.
Keeping controllers out of bundles
First, you need to tell JMSDiExtraBundle to scan the src folder for services by adding this to config.yml:
jms_di_extra:
    locatio...				
				
				
							How to remove the first character of string in PHP?
					How to use  PHP , Remove the first character  :   
                    
                    
                        
                            
                                
                                        13 Answers
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							How to validate an email address in PHP
					...k out this list for tests (both failed and succeeded) of the regex used by PHP's filter_var() function.
Even the built-in PHP functions,  email clients or servers don't get it right. Still in most cases filter_var is the best option.
If you want to know which regex pattern PHP (currently) uses to ...				
				
				
							How to loop through an associative array and get the key? [duplicate]
					...do:
foreach ($arr as $key => $value) {
 echo $key;
}
As described in PHP docs.
    
    
        
            
            
                
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							TCP 的那些事儿(下) - 更多技术 - 清泛网 - 专注C/C++及内核技术
					... 算法
但是上面的这个算法在重传的时候会出有一个终极问题——你是用第一次发数据的时间和ack回来的时间做RTT样本值,还是用重传的时间和ACK回来的时间做RTT样本值?
这个问题无论你选那头都是按下葫芦起了瓢。 如下图所...				
				
				
							.rar, .zip files MIME Type
					I'm developing a simple php upload script, and users can upload only ZIP and RAR files.
                    
                    
                        
                            
                                
                                        6 Answers
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