1. Copying of arraysPointer-pointing problem when copying an array.When the array is copied, the position of the pointer is copied "This copy is exactly the same"However, if the pointer to the copied array is illegal, the position where the new
Array: Creates a new array.Array_walk: Lets a user customize a function to handle every element in an array.Arsort: Sorts the values of an array from large to small.Asort: Sorts the values of an array from small to large.Count: Calculates the number
Array Retrieval function
Array_keys () function
Format: Array array_keys (array arr[, mixed searchvalue]), returns the "key Name" in the ARR array as an array, and if an optional argument searchvalue is specified,
PHP array functions (3), php array FunctionsArray retrieval functions
Format: array array_keys (array arr [, mixed searchValue]); return the "key name" in the arr array in the form of an array. If the optional parameter searchValue is
The ordering of several array functions mentioned below has some commonality:The 1 array is used as the parameter of the sort function, and after sorting, the array itself is changed, and the return value of the function is bool type.
2 function
The sorting of several array functions mentioned below has some commonality:The 1 array is used as the parameter of the sort function, and after sorting, the array itself is changed, and the return value of the function is type bool.
2 A single-a
This article provides a detailed analysis of the collection of PHP array sorting functions and their relationships. For more information, see
The sorting of several array functions mentioned below has some commonalities:1. the array is used as a
The sorting of several array functions mentioned below has some commonalities:1. The array is used as a parameter of the sorting function. After sorting, the array itself changes. The return value of the function is of the bool type.
2. a In the
PHP array sorting function collection and association analysis between them. The sorting of several array functions mentioned below has some commonalities: 1. an array is used as a parameter of the sorting function. after sorting, the array itself
PHP array 1. Numeric index array 1.1 create an arrayThe two most commonly used types in PHP are: arrays, strings. There are two types of arrays, one is a numeric index, one is the key is the index, and the keyword index is a bit like the meaning of
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