How to deal with the page not rendering when Vue uses the following table to modify the array

1. First open the design plan to be rendered in Kujiale. 2. Then open top view rendering under the rendering menu. 3. Then click Orthogonal in the parameter settings in the top view rendering interface. 4. Finally, after adjusting the model angle, click Render Now to render the orthogonal top view.

The method of using a foreach loop to remove duplicate elements from a PHP array is as follows: traverse the array, and if the element already exists and the current position is not the first occurrence, delete it. For example, if there are duplicate records in the database query results, you can use this method to remove them and obtain results without duplicate records.

Methods for deep copying arrays in PHP include: JSON encoding and decoding using json_decode and json_encode. Use array_map and clone to make deep copies of keys and values. Use serialize and unserialize for serialization and deserialization.

The performance comparison of PHP array key value flipping methods shows that the array_flip() function performs better than the for loop in large arrays (more than 1 million elements) and takes less time. The for loop method of manually flipping key values ​​takes a relatively long time.

Title: Implementation method of page jump in 3 seconds: PHP Programming Guide In web development, page jump is a common operation. Generally, we use meta tags in HTML or JavaScript methods to jump to pages. However, in some specific cases, we need to perform page jumps on the server side. This article will introduce how to use PHP programming to implement a function that automatically jumps to a specified page within 3 seconds, and will also give specific code examples. The basic principle of page jump using PHP. PHP is a kind of

Multidimensional array sorting can be divided into single column sorting and nested sorting. Single column sorting can use the array_multisort() function to sort by columns; nested sorting requires a recursive function to traverse the array and sort it. Practical cases include sorting by product name and compound sorting by sales volume and price.

The best practice for performing an array deep copy in PHP is to use json_decode(json_encode($arr)) to convert the array to a JSON string and then convert it back to an array. Use unserialize(serialize($arr)) to serialize the array to a string and then deserialize it to a new array. Use the RecursiveIteratorIterator to recursively traverse multidimensional arrays.

PHP's array_group_by function can group elements in an array based on keys or closure functions, returning an associative array where the key is the group name and the value is an array of elements belonging to the group.