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- How to make a div 100% height of the screen in CSS?
- Use 100vh to directly allow the div to occupy the screen height; if 100%, you need to set the html and body height to 100%; in the elastic layout, you can use flex:1 to make the div fill the remaining space.
- CSS Tutorial . Web Front-end 400 2025-09-19 03:02:00
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- How to grant permissions to a user in MySQL?
- TograntpermissionsinMySQL,usetheGRANTstatementwithappropriateprivilegelevels.Connectasaprivilegeduser,specifytheprivilegetype(e.g.,SELECT,INSERT)andscope(global,database,ortablelevel),thenapplyittoauser.Forexample:GRANTALLPRIVILEGESONmydb.*TO'john'@'
- Mysql Tutorial . Database 237 2025-09-19 02:59:00
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- How to create a sticky footer using CSS
- Use Flexbox or CSSGrid to create sticky footers to ensure that the footer is stuck when there is less content and the content is moved down naturally when there is too much content. 2. Flexbox method: Set the container to display:flex and flex-direction:column, and the content area is stretched with flex:1, and the footer is automatically pushed to the bottom. 3. Grid method: Set display:grid and grid-template-rows:auto1frauto in the container, and the middle rows occupy the remaining space. 4. Key points: The root element must have min-height:100vh, do not set a fixed height in the content area, and give priority to using modern layouts to avoid JS or negative margins.
- CSS Tutorial . Web Front-end 928 2025-09-19 02:33:01
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- How to set a time limit for script execution in PHP?
- Answer: Use set_time_limit() or ini_set() to set the PHP script execution time limit to prevent unlimited operation. For example, set_time_limit(60) allows the script to run for up to 60 seconds. Set to 0 to cancel the limit but be cautious; it can also be dynamically adjusted through ini_set('max_execution_time',120), or configure max_execution_time globally in php.ini, and restart the server after modification. Note that shared hosting may restrict modifications, and disabling time limits can easily lead to resource exhaustion. It is recommended to process time-consuming tasks in batches.
- PHP Tutorial . Backend Development 859 2025-09-19 02:31:00
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- How to create a 3D cube with CSS transforms
- Creating cubes using CSS3D transformation requires combining transform, perspective and transform-style attributes; 2. The HTML structure contains a container and six faces; 3. Adjust the position and orientation of each face through translateZ and rotate; 4. Set preserve-3d to ensure that the child elements are rendered in 3D space; 5. Add rotation animations to enhance the stereoscopic effect.
- CSS Tutorial . Web Front-end 354 2025-09-19 02:17:00
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- How to include a CSS file in HTML
- TolinkaCSSfile,useintheHTMLsection,ensuringcorrectfilepathandsyntaxforproperstyling.
- CSS Tutorial . Web Front-end 422 2025-09-19 02:15:00
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- How to secure a MySQL server installation?
- Runmysql_secure_installationtosetastrongrootpassword,removeanonymoususers,disallowremoterootlogin,removethetestdatabase,andreloadprivilegetables.2.Creatededicateduseraccountswithleastprivilege,grantonlynecessarypermissions,restricthosts,andremoveunus
- Mysql Tutorial . Database 723 2025-09-19 02:11:00
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- Understand the special meaning and processing methods of . and . in PHP file system
- This article aims to deeply analyze the meanings of the two special directory entries in PHP file operations, which represent the current directory and the parent directory respectively. By combining the use scenarios of scandir function, we will explain why these entries are often necessary to filter out when processing file lists, and provide sample code and best practices to help developers write more robust and efficient file system interaction logic.
- PHP Tutorial . Backend Development 314 2025-09-19 02:09:00
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- What is the event scheduler in MySQL?
- TheEventSchedulerinMySQLenablesautomatedexecutionofSQLstatementsorstoredroutinesatspecifiedtimesorintervals,functioninglikecronjobsbutwithinthedatabase;itrunsasabackgroundthread,supportsone-timeandrecurringtasks,andmustbeenabledviaSETGLOBALevent_sche
- Mysql Tutorial . Database 196 2025-09-19 02:08:00
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- How to format dates in MySQL?
- MySQL's DATE_FORMAT() function is used to customize the date and time display format. The syntax is DATE_FORMAT(date, format), and supports a variety of format characters such as %Y, %M, %d, etc., which can realize date display, group statistics and other functions.
- Mysql Tutorial . Database 821 2025-09-19 02:06:00
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- How to split a string into an array in PHP?
- TosplitastringintoanarrayinPHP,usetheexplode()functionwithadelimiter,whichreturnsanarrayofsubstrings;forexample,$fruits=explode(",","apple,banana,orange")yields['apple','banana','orange'].Athirdparametercanlimitthenumberofelements
- PHP Tutorial . Backend Development 126 2025-09-19 01:53:01
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- How to create and use a class in PHP?
- To define a class, you need to use the class keyword, including attributes and methods, and the constructor __construct initialize the object; 2. Create an instance through new, and use -> to access attributes and methods; 3. Public members can be accessed externally, private is only within the class, and protected is limited to subclasses and within the class; 4. The example shows that the Person class creates an object and calls the introduction method to output information.
- PHP Tutorial . Backend Development 316 2025-09-19 01:39:00
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- How to add a placeholder in an HTML input
- Use the placeholder attribute to add prompt text in the HTML input box. For example, the prompt is displayed before the user enters, supports multiple input types, and should be kept concise and does not replace tags to ensure accessibility.
- HTML Tutorial . Web Front-end 739 2025-09-19 01:21:07
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- How to escape special characters in MySQL
- UsepreparedstatementstosafelyhandlespecialcharactersinMySQL.TheypreventSQLinjectionandsyntaxerrorsbyseparatingSQLlogicfromdata,lettingthedrivermanageescapingautomatically,asseenwithPHP’sPDOorMySQLiextensions.
- Mysql Tutorial . Database 320 2025-09-19 01:04:01
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