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- How to write php code to jump to a specified page
- How to write php code to jump to a specified page: 1. Create a php sample file; 2. Use "$url" to define the URL to jump to; 3. Use the header() function to implement the jump, which is used to report to the client Send HTTP header information, including jump instructions.
- PHP Problem 3020 2023-06-09 16:09:57
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- How to remove key from array in php
- How to remove the key of the array in PHP: 1. Create a PHP sample file; 2. Define the parameter "$arr" as the array to be operated on; 3. Use the "array_values()" function to remove the key in the array.
- PHP Problem 1500 2023-06-08 15:45:30
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- What are the commonly used array functions and methods in PHP?
- Commonly used array functions and methods in PHP are: 1. "array_push()" function adds one or more elements to the end of the array; 2. "count()" function returns the number of elements in the array; 3. "array_pop() ” function deletes and returns the elements at the end of the array; 4. The “array_shift()” function deletes and returns the elements at the beginning of the array; 5. The “sort()” function sorts the array in ascending order.
- PHP Problem 1408 2023-06-07 16:01:00
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- Do php array key values distinguish types?
- PHP array keys are not type-sensitive because PHP will automatically cast the data type of the key or value when used. This means that if you use a string key value, you can use an integer as an index, and if you use a non-string key value, PHP will automatically convert it to a string.
- PHP Problem 649 2023-06-07 15:02:44
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- How to find the intersection of arrays in php without using a function
- PHP method to find the intersection of arrays without using functions: 1. Create a PHP sample file; 2. Define an empty array $result to save the intersection; 3. Loop through each element $item1 in the first array $arr1; 4. Loop through each element $item2 in the second array $arr2 again in the $arr1 loop; 5. Determine whether the two elements are equal, and if so, add it to the result array $result; 6. The loop ends After that, just return the result array $result.
- PHP Problem 1231 2023-06-07 14:33:00
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- What is the difference between arrays in php7 and php5
- The difference between arrays in php7 and php5 is: 1. Long integer key names in PHP7 will be forced to be converted to strings; 2. PHP7 "list()" function is more strict than PHP5, and the "list()" function can only be used Numeric array, and must be sorted starting from 0; 3. PHP7 array constants are more clear than PHP5. PHP7 uses the "define()" function to define an array constant. Make sure that constants are not modified. Array constants in PHP5 are ambiguous and may change between requests.
- PHP Problem 853 2023-06-07 14:31:46
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- There are several ways to define arrays in php
- There are four ways to define arrays in PHP: 1. Numeric index array, using integers as array subscripts, and storing each element in sequential numbering; 2. Associative arrays, using strings as array subscripts, with names and values Store each element in a one-to-one correspondence; 3. Fixed-length numeric index array supported starting from PHP 7.4; 4. Use the list() function to deconstruct the array into multiple variables.
- PHP Problem 1889 2023-06-07 14:09:30
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- How to solve the problem of array index not found in php7
- Solution to the array index not found in php7: 1. Create a PHP sample file; 2. Define the array variable $my_array; 3. Use the isset() or array_key_exists() function to check whether the specified array exists in the array through the if judgment statement. Index; 4. Just output the corresponding results or error prompts.
- PHP Problem 908 2023-06-07 13:26:35
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- what is php superglobal variable array
- Superglobal variables in PHP are a type of predefined global variable array that can be used in scripts and can be accessed without declaration by the developer. These arrays include $_GET, $_POST, $_REQUEST, $_COOKIE, etc.
- PHP Problem 1001 2023-06-07 13:03:27
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- What are the methods of sorting php arrays?
- There are 6 common methods for sorting PHP arrays: 1. "sort()" sorts the array in ascending order; 2. "rsort()" sorts the array in descending order; 3. "asort()" sorts the array by value and retains Index relationship; 4. "ksort()" sorts according to the key and retains the index relationship; 5. "arsort()" sorts according to the value in descending order and retains the index relationship; 6. "krsort()" sorts according to the key in descending order and retains the index relationship .
- PHP Problem 1905 2023-06-07 11:50:43
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- How to find the average total score in php array
- How to calculate the average total score in a php array: 1. Create a PHP sample file; 2. Define an array $scores containing integer values; 3. Use the "count()" function to get the number of elements in the array and store it in the variable $count 4. Define the total score variable $sum and use the "array_sum()" function to calculate the sum of the array elements; 5. Define the average score variable $average and divide the sum by the number of elements to get the average score; 6. Output $sum , $average is enough.
- PHP Problem 1532 2023-06-07 11:24:08
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- There are several ways to deduplicate arrays in php
- There are three common methods for deduplicating arrays in PHP: 1. The "array_unique()" function can remove duplicate values in the array and return a new array; 2. Use a loop to delete duplicates, and use a for or foreach loop to traverse the entire array. , determine whether there are duplicates and delete them; 3. Use the "array_flip()" and "array_keys()" functions. The "array_flip()" function exchanges the keys and values of the array, and "array_keys()" gets all the key names. .
- PHP Problem 2616 2023-06-07 11:38:05
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- How to sum json arrays in php
- Method for summing json arrays in php: 1. Create a PHP sample file; 2. Define the variable $jsonArrayStr to store the provided JSON array and change it to a string type; 3. Use the "json_decode()" function to decode it into a PHP array Process; 4. Use the array_reduce() function to iterate the calculated value and return the total result; 5. Echo output and print the result.
- PHP Problem 1170 2023-06-07 10:33:25
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- There are several ways to loop through arrays in php
- There are three ways to loop an array in PHP, which are: 1. for loop, which traverses the array. The advantage is that only one variable is needed to complete the loop, and the location of each element can be accurately obtained; 2. foreach loop, which The method is to loop based on the key name of the array; 3. while loop requires manual maintenance of the loop counter, which is more cumbersome than the for loop method.
- PHP Problem 1824 2023-06-07 10:14:07
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- How to find the sum of two arrays in php
- How to find the sum of two arrays in PHP: 1. Create a PHP sample file; 2. Define two arrays $array1 and $array2 containing integer values; 3. Use the "array_map()" function and the added anonymous The function merges the two arrays into the $sumArray array; 4. "print_r($sumArray)" outputs and prints the new array.
- PHP Problem 1736 2023-06-07 09:54:59
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