10 recommended articles about array operations
The current() function in php returns the current element (unit) in the array. Each array has an internal pointer pointing to its "current" unit, which initially points to the first unit inserted into the array. If we execute current once, the internal pointer will point to the next unit, and we can use current to get the value of the current unit in the array. This article collects several articles on the usage of PHP's array operation function current(). I hope it will be helpful to everyone's understanding of array operations. 1.php array function current() definition and usage The current() function in php returns the current element (unit) in the array. If the current element is empty or the current element has no value, it returns FALSE. Each array has an internal pointer pointing to its "current" element, which initially points to the first element inserted into the array. This function does not move the internal pointer of the array. If you need to move the pointer, you need to cooperate with other functions. Let’s take a look. 2. Detailed explanation of php end() function and current() function usage examples in php end
1. php returns elements in the array current() function usage summary
Introduction: The current() function in PHP returns the current element (unit) in the array, and there is one in each array The internal pointer points to its "current" unit, initially pointing to the first unit inserted into the array. If we execute current once, the internal pointer will point to the next unit. We can use current to get the current unit in the array. value. This article collects several articles on the usage of PHP's array operation function current(). I hope it will be helpful to everyone's understanding of array operations.
Introduction: The current() function in PHP returns the current element (unit, which is the first element of the array) in the array. The next() function points the internal pointer to the next element in the array. element and output the value of the element. The reset() function points the internal pointer to the first element in the array and outputs the value of the element. This article mainly introduces the usage of current, next and reset functions in PHP. The example form details the specific usage of the functions current, next and reset for array operations in PHP. It has certain reference value for in-depth understanding of the usage of arrays. I hope it will be helpful to everyone's understanding of arrays
3. Java Basics Summary of Common Array Operations (Collection)
Introduction: The editor below will bring you a summary of common Java basic array operations (a must-read article). I think it is quite good, so I will share it with you now and give it a reference. Bar
4. WeChat applet to learn array operations
Introduction: Preface I believe that after the mini program was launched in public beta, many friends have rushed to apply for registration of the mini program. During the development stage, they also encountered many problems, such as wx.request data request being unsuccessful and array operations. Sometimes, I don’t know how to push data into the array, how input monitors the status of user input, the background image of css cannot obtain local resources, etc. This blog will have a special topic to give solutions to the array operations today for friends who encounter these problems. We mainly talk about array operations. I believe that for those who have used vu...
##5. When to create a MySQL index
Introduction: Indexes can improve data retrieval efficiency and reduce database IO costs, and indexes can also reduce database sorting costs. Sorting and grouping operations mainly consume CPU resources and memory, so making good use of indexes in sorting and grouping operations will greatly reduce the consumption of CPU resources. How to determine whether to create an index? 1. We all know the fields that are frequently used as query conditions. What
6. Detailed sample code for JavaScript array operation function methods
Introduction: 1. concat() concatenates two or more arrays. This method does not change the existing array, but only returns a copy of the concatenated array. For example: 1
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