What is the best solution for loop reading with paging interface?-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

What is the best solution for loop reading with paging interface?

PHP中文网

Aug 27, 2016 am 09:06 AM

Currently, we need to read third-party interface data. The amount of data is relatively large, so the third party uses paging. My current plan is to call the curl reading interface method in a loop, and then convert the json data into Array, when splicing the array, perform data filtering and warehousing operation, but due to the instability of the third-party interface, the reading may fail. Is there a better solution?

Reply content:

Currently, we need to read third-party interface data. The amount of data is relatively large, so the third party uses paging. My current plan is to call the curl reading interface method in a loop, and then add json The data is converted into an array, the array is spliced, and the data is filtered and stored in the database. However, due to the instability of the third-party interface, the reading may fail. Is there a better solution?

If the amount of data is large, you can use a scheduled script to pull it.
When pulling, first sort by a field such as auto-incrementing id, so as to avoid the problem of paging data changes.
Then when the script is executed or when the loop ends, write down the largest ID, and then bring a condition greater than this value the next time it is executed.

Then when the script is executed, if the interface call fails, you can try to pull it again several times. If it fails, stop the script execution, then write down the id, and then give an early warning message and manual intervention.
Well, a simple idea

1. It is recommended to establish a crawling original database, whether it is id or md5, to ensure the uniqueness of single data capture
2. The interface is unstable, and curl failure handling can be handled through exception handling, etc. Try your best to ensure that the data capture is successful
3. Be prepared to capture data repeatedly. Based on 1, ensure that the data will not be processed repeatedly

The above is the optimal solution for loop reading with paging interface, and more For more related content, please pay attention to the PHP Chinese website (www.php.cn)!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

How to calculate the total number of elements in a PHP multidimensional array?May 15, 2025 pm 09:00 PM

Calculating the total number of elements in a PHP multidimensional array can be done using recursive or iterative methods. 1. The recursive method counts by traversing the array and recursively processing nested arrays. 2. The iterative method uses the stack to simulate recursion to avoid depth problems. 3. The array_walk_recursive function can also be implemented, but it requires manual counting.

What are the characteristics of do-while loops in PHP?May 15, 2025 pm 08:57 PM

In PHP, the characteristic of a do-while loop is to ensure that the loop body is executed at least once, and then decide whether to continue the loop based on the conditions. 1) It executes the loop body before conditional checking, suitable for scenarios where operations need to be performed at least once, such as user input verification and menu systems. 2) However, the syntax of the do-while loop can cause confusion among newbies and may add unnecessary performance overhead.

How to hash strings in PHP?May 15, 2025 pm 08:54 PM

Efficient hashing strings in PHP can use the following methods: 1. Use the md5 function for fast hashing, but is not suitable for password storage. 2. Use the sha256 function to improve security. 3. Use the password_hash function to process passwords to provide the highest security and convenience.

How to implement array sliding window in PHP?May 15, 2025 pm 08:51 PM

Implementing an array sliding window in PHP can be done by functions slideWindow and slideWindowAverage. 1. Use the slideWindow function to split an array into a fixed-size subarray. 2. Use the slideWindowAverage function to calculate the average value in each window. 3. For real-time data streams, asynchronous processing and outlier detection can be used using ReactPHP.

How to use the __clone method in PHP?May 15, 2025 pm 08:48 PM

The __clone method in PHP is used to perform custom operations when object cloning. When cloning an object using the clone keyword, if the object has a __clone method, the method will be automatically called, allowing customized processing during the cloning process, such as resetting the reference type attribute to ensure the independence of the cloned object.

How to use goto statements in PHP?May 15, 2025 pm 08:45 PM

In PHP, goto statements are used to unconditionally jump to specific tags in the program. 1) It can simplify the processing of complex nested loops or conditional statements, but 2) Using goto may make the code difficult to understand and maintain, and 3) It is recommended to give priority to the use of structured control statements. Overall, goto should be used with caution and best practices are followed to ensure the readability and maintainability of the code.

How to implement data statistics in PHP?May 15, 2025 pm 08:42 PM

In PHP, data statistics can be achieved by using built-in functions, custom functions, and third-party libraries. 1) Use built-in functions such as array_sum() and count() to perform basic statistics. 2) Write custom functions to calculate complex statistics such as medians. 3) Use the PHP-ML library to perform advanced statistical analysis. Through these methods, data statistics can be performed efficiently.

How to use anonymous functions in PHP?May 15, 2025 pm 08:39 PM

Yes, anonymous functions in PHP refer to functions without names. They can be passed as parameters to other functions and as return values of functions, making the code more flexible and efficient. When using anonymous functions, you need to pay attention to scope and performance issues.

See all articles