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System files: In development, we sometimes need to know the last access time of a file and the last modification time of a file. Let’s introduce the three functions provided by PHP to determine the access, creation and last modification time of a file: fileatime(), filectime () and filetime(). 1. fileatime()int fileatime(string filename): The fileatime() function returns the time when filename was last accessed. The last access here refers to whenever a data block of a file is read, in UNIX timestamp format, and returned when there is an error. FALSE. 2. filectime()int filectime(string filename): The filectime() function returns the last change time of filename. The last change here refers to the last change time of the inode of the specified file filename, where the inode (index node) is used to store files and directories. The basic information includes time, file name, user and group, etc., using UNIX timestamp
1. Recommended 10 articles about the php fileatime() function
Introduction: System files: During development, we sometimes need to know the last access time of a file and the last modified time of the file. Introduction Let’s take a look at the three functions provided by PHP to determine the access, creation and last modification time of a file: fileatime(), filectime() and filemtime(). 1. fileatime()int fileatime(string filename): The fileatime() function returns the time when filename was last accessed. The last access here refers to the number of times a file is accessed...
2. linux - php uses the filectime function to get the modification time of the file and returns 1970
Introduction: Environment: CentOS6.5 uses php to get the modification time of the file. The result is 1970, why? Code: {code...} Result: The time of . and .. is normal, I don’t understand. Thank you all
Introduction: php creates a file named test.html and uses filectime to get the creation time t1 php deletes the file named test.html and php recreates the file named For the test.html file, use filectime to get the creation time t2. Why t1 = t2? ? Just create...
Introduction: php creates a file named test.html and uses filectime to get the creation time t1 php deletes the file named test.html and php recreates the file named For the test.html file, use filectime to get the creation time t2. Why t1 = t2? ? Just create...
5. PHP View file modification time
Introduction::This article mainly introduces You can use PHP to check the file modification time. Students who are interested in PHP tutorials can refer to it.
6. Problems caused by php file status cache_PHP tutorial
Introduction: php file status cache with Come the question. stat(), lstat(), file_exists(), is_writable(), is_readable(), is_executable(), is_file(), is_dir(), is_link(), filectime(), fileatime(), filemtime(), fileinode( ), fileg
7. Method for customers to subscribe to RSS and update regularly
Introduction: Ask a customer to subscribe to RSS , the method of regular updating is creating a website that can provide customers with the ability to subscribe to local RSS through keyword searches. However, in order to protect the number of calls to the database, we are planning to limit the number of calls made by customers. The general idea is: the first time a user subscribes, the database is called and a static XML file is generated. Based on the XML generation time, it is automatically updated every 24 hours. Idea 1: Every time the user requests XML, it is judged based on time()-filectime. If it is greater than 24*6
##8. Problems caused by php file status caching
Introduction: Problems caused by php file status caching. stat(), lstat(), file_exists(), is_writable(), is_readable(), is_executable(), is_file(), is_dir(), is_link(), filectime(), fileatime(), filemtime(), fileinode( ), fileg
9. How to subscribe to RSS and update regularly
Introduction: I am asking a customer to subscribe to RSS and update regularly. I am making a website. , you can provide customers with the ability to subscribe to local RSS through keyword searches, but in order to protect the number of calls to the database, we plan to limit the number of calls made by customers. The general idea is: the first time a user subscribes, the database is called and a static XML file is generated. Based on the XML generation time, it is automatically updated every 24 hours. Idea 1: Every time the user requests XML, it is judged based on time()-filectime. If it is greater than 24*6
10. PHP determines whether the file has been modified. Example
Introduction: In the website management system, sometimes you need to check whether a file has been modified, when it was modified, and when the last modification time was. This example is This function can be implemented to judge the files submitted in the form and detect the modification time.
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linux - php uses the filectime function to get the modification time of the file and returns 1970
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