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- How can you prevent a class from being extended or a method from being overridden in PHP? (final keyword)
- In PHP, the final keyword is used to prevent classes from being inherited and methods being overwritten. 1) When marking the class as final, the class cannot be inherited. 2) When marking the method as final, the method cannot be rewritten by the subclass. Using final keywords ensures the stability and security of your code.
- PHP Tutorial . Backend Development 965 2025-04-08 00:03:41
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- Compare and contrast InnoDB and MyISAM storage engines (features, locking, transactions).
- InnoDB is suitable for highly concurrency and transaction-intensive applications, while MyISAM is suitable for read-intensive applications. 1) InnoDB supports transaction and row-level locks, and is suitable for high-concurrency scenarios such as e-commerce platforms. 2) MyISAM does not support transactions, but reads fast, and is suitable for read-intensive applications such as blog systems.
- Mysql Tutorial . Database 760 2025-04-08 00:03:20
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- Explain different error types in PHP (Notice, Warning, Fatal Error, Parse Error).
- There are four main error types in PHP: 1.Notice: the slightest, will not interrupt the program, such as accessing undefined variables; 2. Warning: serious than Notice, will not terminate the program, such as containing no files; 3. FatalError: the most serious, will terminate the program, such as calling no function; 4. ParseError: syntax error, will prevent the program from being executed, such as forgetting to add the end tag.
- PHP Tutorial . Backend Development 1194 2025-04-08 00:03:01
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- Explain B-Tree indexes in MySQL and how they work.
- B-Tree indexes in MySQL accelerate data retrieval by creating indexes on columns of tables, significantly reducing the amount of data that needs to be scanned during queries, thereby improving query performance. 1) Create a B-Tree index using a CREATEINDEX statement, such as CREATEINDEXidx_ageONemployees(age). 2) The working principle of B-Tree index includes structure, query process, and automatic adjustment during insertion and deletion. 3) Use the EXPLAIN command to debug the problem that the index is not used. 4) Performance optimization suggestions include selecting appropriate columns, using overlay indexes, regular maintenance, as well as maintaining code readability and testing and monitoring.
- Mysql Tutorial . Database 1025 2025-04-08 00:02:21
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- Explain index merge optimization in MySQL.
- Index merging is a MySQL query optimization strategy that improves query efficiency by leveraging multiple indexes. 1) Index scan: MySQL scans each of the indexes involved separately to obtain records that meet the conditions. 2) Result merge: merge the results through Union, Intersection or Sort-Union. 3) Result filtering: The combined results are further filtered to ensure that all query conditions are met.
- Mysql Tutorial . Database 262 2025-04-08 00:01:30
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- Some Innocent Fun With HTML Video and Progress
- The idea came while watching a mandatory training video on bullying in the workplace. I can just hear High School Geoff LOL-ing about a wimp like me have to
- CSS Tutorial . Web Front-end 520 2025-04-07 10:53:10
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- How the Vue Composition API Replaces Vue Mixins
- Looking to share code between your Vue components? If you're familiar with Vue 2, you've probably used a mixin for this purpose. But the new Composition API,
- CSS Tutorial . Web Front-end 927 2025-04-07 10:50:11
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- SVG, Favicons, and All the Fun Things We Can Do With Them
- Favicons are the little icons you see in your browser tab. They help you understand which site is which when you’re scanning through your browser’s bookmarks
- CSS Tutorial . Web Front-end 585 2025-04-07 10:48:10
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- Pseudo-Randomly Adding Illustrations with CSS
- Between each post of Eric Meyer’s blog there’s this rather lovely illustration that can randomly be one of these five options:
- CSS Tutorial . Web Front-end 1038 2025-04-07 10:43:08
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- Click Once, Select All; Click Again, Select Normally
- A bonafide CSS trick from Will Boyd!
- CSS Tutorial . Web Front-end 508 2025-04-07 10:41:11
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- @property
- The @property is totally new to me, but I see it's headed to Chrome, so I suppose it's good to know about!
- CSS Tutorial . Web Front-end 910 2025-04-07 10:32:12
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- Static or Not?
- A quick opinion piece by Kev Quirk: Why I Don’t Use A Static Site Generator. Kev uses WordPress:
- CSS Tutorial . Web Front-end 485 2025-04-07 10:31:09
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- Fake Code
- Here's a fun little idea from Knut Synstad. You give it the URL of a GitHub Gist and it converts the Gist into grayscale rounded blobs (SVG) that sorta look
- CSS Tutorial . Web Front-end 375 2025-04-07 10:27:10
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- A Book Apart Turning 10
- Early congratulations, A Book Apart! That's a hell of a milestone. I'm quite sure I've read more A Book Apart books than any other tech book publisher.
- CSS Tutorial . Web Front-end 367 2025-04-07 10:22:10
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