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- Dynamic web content update: Date and time-based PHP and database implementation tutorial
- This tutorial will introduce in detail how to use PHP combined with date and time functions to achieve automatic update of web page content, such as displaying different program information according to week and time period. The article covers a variety of methods from simple conditional judgment, using PHP array to managing program schedules, and ultimately using database (SQL) for flexible and scalable program data management, and provides corresponding code examples and precautions.
- PHP Tutorial . Backend Development 123 2025-08-05 21:57:01
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- Automatic update of web content based on date and time: Taking radio program schedule as an example
- This article aims to provide a complete set of tutorials to guide how to use PHP and database technology to achieve automatic date and time updates of web content, especially for scenarios such as radio program schedules that require precise time control. The tutorial will cover a variety of methods from simple conditional judgment to managing programs using arrays to dynamic content management in combination with databases, and provide detailed code examples and practical suggestions to ensure that the content can be displayed dynamically based on current time.
- PHP Tutorial . Backend Development 741 2025-08-05 21:54:01
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- Detect whether there are multiple different values in PHP array
- This article aims to provide an efficient method for determining whether a PHP array contains at least two different values. By utilizing the array_count_values function to count the occurrence frequency of each value in the array and combining the count of the result array, we can quickly and accurately verify the uniqueness of elements in the array, thereby providing critical judgments when data consistency is required.
- PHP Tutorial . Backend Development 448 2025-08-05 21:48:00
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- Methods to efficiently determine whether there are multiple different values in PHP arrays
- This article will explain in detail how to efficiently determine whether there are multiple different values in PHP arrays. By using the array_count_values() function, we can quickly count the number of occurrences of each value in the array, and then determine whether the original array contains more than one unique value by checking the number of elements in the result array. This approach is especially suitable for scenarios where array elements need to be homogeneous, such as verifying that the seller ID in the order is consistent.
- PHP Tutorial . Backend Development 644 2025-08-05 21:36:01
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- How to vertically and horizontally center an element in CSS?
- UseFlexboxwithdisplay:flex,justify-content:center,andalign-items:centerformodern,responsivelayouts;2.UseCSSGridwithplace-items:centerifalreadyusinggrid;3.Useabsolutepositioningwithtop:50%,left:50%,andtransform:translate(-50%,-50%)forolderbrowsers;4.U
- CSS Tutorial . Web Front-end 931 2025-08-05 21:22:01
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- How to use CSS selectors effectively?
- Prioritizesimple,low-specificityselectorslikeclassesoverIDsorcomplexchainstoensuremaintainabilityandavoid!important;2.Usesemantic,reusableclassnameswithconventionslikeBEM(.block__element--modifier)forclarityandscalability;3.Applyattributeandpseudo-cl
- CSS Tutorial . Web Front-end 504 2025-08-05 21:21:01
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- How to create a card layout with CSS?
- To create a responsive CSS card layout, first build the card structure using HTML, then beautify the style with CSS, and implement a responsive grid via Grid or Flexbox. 1. Each card consists of a div containing pictures, content and buttons; 2. Use border, box-shadow, border-radius and other attributes to design the card appearance to ensure the image is responsive; 3. Use CSSGrid to set.card-grid to display:grid, use grid-template-columns:repeat(auto-fit,minmax(280px,1fr)) to achieve adaptive column count, or use Flexbo
- CSS Tutorial . Web Front-end 756 2025-08-05 21:19:00
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- Check if there are different values in the PHP array
- This article describes how to efficiently check whether a PHP array contains at least two different values. By using the array_count_values() function, we can count the number of times each value appears in the array, thereby quickly determining whether there are multiple different values. This method is suitable for arrays of any size, and can effectively complete checks even with hundreds of elements.
- PHP Tutorial . Backend Development 849 2025-08-05 21:18:02
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- How to create a responsive pricing table with a toggle switch?
- To create a responsive pricing table, you must first build an HTML structure containing toggle switches and price plans; 2. Use CSS to achieve a mobile-first elastic layout, and ensure a responsive design through Flexbox; 3. Monitor the state of the switch through JavaScript, and dynamically update the price as monthly or annual payment equivalent monthly price; 4. Pay attention to accessibility, visual feedback and performance optimization to ensure a good cross-device experience. Finally, a pricing table with clear semantics, beautiful styles and smooth interactions is implemented, suitable for all types of websites and complete user experience.
- CSS Tutorial . Web Front-end 265 2025-08-05 21:18:01
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- How to use the CSS :not() pseudo-class?
- TheCSS:not()pseudo-classallowsstylingelementsexceptthosematchingaspecificselector.1.Usebasicsyntax:not(selector)toexcludeelements,e.g.,button:not([type="submit"])stylesallbuttonsexceptsubmitbuttons.2.Excludebyclass:.item:not(.featured)dimsa
- CSS Tutorial . Web Front-end 358 2025-08-05 21:16:00
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- How to create a responsive footer with multiple columns using CSS?
- Use Flexbox or CSSGrid to create responsive multi-column footers, 2. Stack it into a single column on a small screen through media queries, 3. Use semantic HTML and relative units to ensure accessibility and responsiveness, and ultimately achieve a simple footer layout that is compatible across devices.
- CSS Tutorial . Web Front-end 665 2025-08-05 21:15:01
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- How to create a responsive grid of logos with CSS?
- Create a responsive logo grid with CSSGrid through the following steps: 1. Use display:grid and grid-template-columns:repeat(auto-fit,minmax(150px,1fr)) to create an adaptive column layout to ensure that it is evenly distributed and automatically wrapping lines under different screen sizes; 2. Center the logo through the flex layout in the .logo-item, and set a fixed height and background color to unify the visual effect; 3. Set max-width, max-height and object-fit:contain for the image to maintain the proportion without overflow; 4. Optionally add media queries,
- CSS Tutorial . Web Front-end 306 2025-08-05 21:14:01
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- How to center a div in CSS?
- The method of centering a div depends on the requirements: 1. Only use margin:0auto in horizontal centering; 2. Recommend Flexbox horizontally and vertically centering, set display:flex, justify-content:center and align-items:center; 3. If you use Grid layout, you can use display:grid to match place-items:center; 4. Compatible with old browsers, you can choose to add transform:translate (-50%,-50%); 5. Only use text-align:center. Flexbox is the most commonly used and flexible in modern times
- CSS Tutorial . Web Front-end 448 2025-08-05 21:13:01
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- PHP array: A method to efficiently determine whether there are multiple different values
- This tutorial will introduce in detail how to use the PHP built-in functions array_count_values() and count() to efficiently determine whether there are at least two different values in an array. This method is especially suitable for scenarios where it is necessary to quickly identify the diversity of elements in an array, avoiding complex loop traversals, thereby improving code performance and readability.
- PHP Tutorial . Backend Development 382 2025-08-05 21:12:01
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