What language is WordPress written in?

To create a glass mimicry effect of CSS, you need to use backdrop-filter to achieve background blur, set a translucent background such as rgba(255,255,255,0.1), add subtle borders and shadows to enhance the sense of hierarchy, and ensure that there is enough visual content behind the elements; 1. Use backdrop-filter:blur(10px) to blur the background content; 2. Use rgba or hsla to define the transparent background to control the degree of transparency; 3. Add 1pxsolidrgba(255,255,255,0.3) borders and box-shadow to enhance the three-dimensionality; 4. Ensure that the container has rich backgrounds such as pictures or textures to present a blurred penetration effect; 5. It is compatible with old browsers

You can customize the separator by using the SEPARATOR keyword in the GROUP_CONCAT() function; 1. Use SEPARATOR to specify a custom separator, such as SEPARATOR'; 'The separator can be changed to a semicolon and plus space; 2. Common examples include using the pipe character '|', space'', line break character '\n' or custom string '->' as the separator; 3. Note that the separator must be a string literal or expression, and the result length is limited by the group_concat_max_len variable, which can be adjusted by SETSESSIONgroup_concat_max_len=10000; 4. SEPARATOR is optional

Thegrid-template-areaspropertyallowsdeveloperstocreateintuitive,readablelayoutsbydefiningnamedgridareas;eachstringrepresentsarowandeachwordacolumncell,withgrid-areanamesonchildelementsmatchingthoseinthetemplate,suchas"headerheaderheader"for

To add box shadows, use box-shadow attribute; 1. The basic syntax is box-shadow: horizontal offset vertical offset blur radius expansion radius shadows in color; 2. The first three values are required, the rest are optional; 3. Use rgba() or hsla() to achieve transparent effect; 4. The positive expansion radius expands shadows and the negative value is reduced; 5. Multiple shadows can be added by commas separation; 6. Overuse should be avoided to ensure that visibility is tested on different backgrounds; this attribute is well supported by the browser, and reasonable use can improve the design texture.

To select data from MySQL table, you should use SELECT statement, 1. Use SELECTcolumn1, column2FROMtable_name to obtain the specified column, or use SELECT* to obtain all columns; 2. Use WHERE clause to filter rows, such as SELECTname, ageFROMusersWHEREage>25; 3. Use ORDERBY to sort the results, such as ORDERBYageDESC, representing descending order of age; 4. Use LIMIT to limit the number of rows, such as LIMIT5 to return the first 5 rows, or use LIMIT10OFFSET20 to implement paging; 5. Use AND, OR and parentheses to combine

There are two main ways to implement dark mode: one is to use prefers-color-scheme media to query automatically to adapt system preferences, and the other is to add manual switching function through JavaScript. 1. Use prefers-color-scheme to automatically apply dark themes according to the user system. There is no need for JavaScript, just define the styles in the media query; 2. To achieve manual switching, you need to define light-theme and dark-themeCSS classes, add toggle buttons, and use JavaScript to manage the theme status and localStorage to save user preferences; 3. You can combine both to read localSt first when the page is loaded.

IFNULL()inMySQLreturnsthefirstexpressionifitisnotNULL,otherwisereturnsthesecondexpression,makingitidealforreplacingNULLvalueswithdefaults;forexample,IFNULL(middle_name,'N/A')displays'N/A'whenmiddle_nameisNULL,IFNULL(discount,0)ensurescalculationslike

TheLIKEoperatorinMySQLisusedtosearchforpatternsintextdatausingwildcards;1.Use%tomatchanysequenceofcharactersandtomatchasinglecharacter;2.Forexample,'John%'findsnamesstartingwithJohn,'%son'findsnamesendingwithson,'%ar%'findsnamescontainingar,'\_\_\_\_