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- Performance Showdown: Benchmarking PHP Array Deletion Methods
- unset()isthefastestmethodforremovingarrayelementsbykey,operatinginO(1)time,modifyingthearrayinplace,andusingminimalmemory,butitdoesnotreindexnumericarrays.2.array_splice()removeselementsbynumericindexandautomaticallyreindexesthearray,makingitidealfor
- PHP Tutorial . Backend Development 667 2025-08-05 20:14:01
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- Solution to the failure problem in CodeIgniter 4
- This article aims to solve the problem that the set_cookie() function cannot take effect in CodeIgniter 4. By analyzing the cause of the problem, combining official documents and actual cases, we provide an effective solution to ensure that cookies can be set correctly and accessed after redirection. The key to this scheme is to use the withCookies() method.
- PHP Tutorial . Backend Development 543 2025-08-05 20:12:01
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- Why setting width and height on HTML images is important
- SettingwidthandheightattributesonHTMLimageelementspreventslayoutshiftsandimprovesuserexperience;1.ItpreventsCumulativeLayoutShift(CLS)byreservingspaceduringloading,avoidingsuddencontentjumps;2.ItsupportsresponsivedesignwhencombinedwithCSSlikewidth:10
- HTML Tutorial . Web Front-end 318 2025-08-05 20:11:01
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- How to set a background image using inline styles in HTML
- Tosetabackgroundimageusinginlinestyles,usethestyleattributewithbackground-image:url('image.jpg')onanHTMLelementlikeadiv.2.Replace'image.jpg'withthecorrectimagepath,usingquotesinsideurl()tohandlespaces.3.Includebackground-size:cover,background-positio
- HTML Tutorial . Web Front-end 959 2025-08-05 20:09:02
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- How to create a responsive team showcase with CSS?
- Use semantic HTML structure team member information, and each member uses a class as a div to wrap it with a class; 2. Use CSSGrid layout to realize a responsive grid through grid-template-columns:repeat(auto-fit,minmax(280px,1fr)) to ensure that the number of columns is automatically adjusted on different devices; 3. Follow the principle of mobile priority and optimize the display effect of small screens in conjunction with media queries; 4. Improve accessibility, including image alt text, correct title level and keyboard navigation focus style; 5. Add fade-in animation to enhance the visual experience, and achieve the fade-in effect of member cards one by one through animation. Final reality
- CSS Tutorial . Web Front-end 535 2025-08-05 20:04:01
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- To Re-index or Not: Handling Array Keys After Deletion
- Re-indexingafterdeletingarrayelementsinPHPisnecessaryonlywhensequentialnumerickeysarerequired;otherwise,itcanbeskipped.2.Whenusingunset(),keysarenotautomaticallyre-indexed,leavinggaps,whichmaycauseissuesinforloops,JSONencoding,orfunctionsexpectingcon
- PHP Tutorial . Backend Development 639 2025-08-05 19:59:01
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- Destructuring Arrays Within `foreach` Loops in Modern PHP
- PHP supports array deconstruction in foreach loops. 1. It can directly deconstruct index subarrays such as [$x,$y] to extract coordinates; 2. It supports ['key'=>$var] syntax deconstructing associative arrays; 3. It can provide default values for missing values through $var=default; 4. It can combine key names to capture such as $key=>[$a,$b] to process nested structures, which makes the code more concise, safe and easy to read.
- PHP Tutorial . Backend Development 159 2025-08-05 19:57:00
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- How to use thead, tbody, and tfoot to structure an HTML table
- Use and can improve the readability, accessibility and maintainability of tables; 1. Tables should contain for table headers, for body data, for summary information, and should be ahead of the code to ensure correct rendering; 2. These elements help screen reader parsing, support CSS style control, implement table header duplication during printing, and simplify JavaScript operations; 3. Each table can only have one and one, but can contain multiple data to group data. The header should always be explicitly used to define tables and avoid omission, thereby enhancing semantics and professionalism.
- HTML Tutorial . Web Front-end 479 2025-08-05 19:56:02
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- The Complete Playbook for Adding, Prepending, and Inserting into PHP Arrays
- To add elements to a PHP array, you need to select different methods according to the position: 1. Use $[] syntax or array_push() to add elements at the end. $[] is recommended because it is more concise and efficient; 2. Use array_unshift() to add elements at the beginning, but the numeric keys will be reset; 3. Use array_splice() to insert elements at the specified position in the middle, which is suitable for indexing arrays; 4. It is recommended to insert them with array_merge() combined with array_slice() to preserve the key names. Each method is suitable for different scenarios. It should be reasonably selected based on the array type and insertion position, and ultimately achieve flexible and efficient array operations.
- PHP Tutorial . Backend Development 460 2025-08-05 19:54:01
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- CodeIgniter 4 Setting Cookies Invalid Errors and Solutions
- This article aims to solve the problem that the set_cookie() function cannot take effect in CodeIgniter 4. We will dig deeper into the cause of this problem and provide effective solutions to ensure that cookies are set and read correctly.
- PHP Tutorial . Backend Development 249 2025-08-05 19:54:00
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- CodeIgniter 4 Setting Cookies Invalid Problem Solving Guide
- This article aims to solve the problem that after using the set_cookie() function to set a cookie in CodeIgniter 4, the cookie cannot be obtained on the redirect page. By analyzing the cause of the problem and providing the right solution, helping developers set and use cookies smoothly in CodeIgniter 4 projects. The key is to understand the role of the withCookies() method and apply it to the redirection response.
- PHP Tutorial . Backend Development 173 2025-08-05 19:48:00
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- Creating HTML Frames with `frameset` (Legacy)
- HTMLframesareoutdatedbutunderstandingthemisusefulforhistoricalcontextormaintainingolderwebsites.1.FramesuseinsteadoftodividepagesintosectionswithseparateHTMLfiles.2.Layoutscanbedefinedusingrowsorcolumnsviathecolsorrowsattribute.3.Eachsupportsattribut
- HTML Tutorial . Web Front-end 134 2025-08-05 19:41:22
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- Why Caching `count()` Outside Your PHP For Loop Matters
- When using count(), its results should be cached outside the loop to avoid the performance overhead caused by repeated calls; 1. Calling count() in each loop will increase unnecessary function overhead, and executing $count=count($array) in advance can make the function run only once; 2. For large arrays (such as 50,000 elements), uncache will result in 49,999 redundant calls, with a significant performance impact; 3. This optimization principle also applies to functions such as strlen() and sizeof() that do not change in the loop; 4. Although the count() of the array is O(1), the function call itself still has symbol lookup and stack frame overhead; therefore, pre-storing the count() result is a side effect without side effect
- PHP Tutorial . Backend Development 733 2025-08-05 19:36:01
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- Solutions where cookie settings in CodeIgniter 4 do not take effect
- This article aims to solve the problem that after setting cookies using the set_cookie() function in CodeIgniter 4, the cookies cannot be obtained after redirection. By using the withCookies() method, ensure that cookies are correctly set during redirection, and provide sample code and precautions to help developers complete cookie settings smoothly.
- PHP Tutorial . Backend Development 267 2025-08-05 19:36:01
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