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PHP array definition and array traversal, PHP Array function usage and examples, PHP array value assignment, PHP multidimensional array of the loop output, etc., for everyone to learn reference.
1, PHP array definition and traversal 2, PHP
Basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Get the value of an arrayArray_keys ($arr); Gets the key name of the arrayArray_flip ($arr); the values in the array are exchanged with the key names (if
In PHP, the values stored in the array become array elements, the array has a one-dimensional array and a multidimensional array, and the index of each array element is also called the keyword, and access to the array elements can be indexed.
Ask: How to build a multidimensional array of SQL query results
The function I want to implement is this:
I pass a string of numbers for SQL to receive, the number in the form of the ID value of the dish, similar to "one-in-one," after the query can
PHP Tutorial: Array declaration, traversal, array global variables
Copy CodeThe code is as follows:
/*
* First, an overview of arrays
* 1. The nature of the array: managing and manipulating a set of variables, batch processing
* 2. Compound type
The declaration of an array
1, direct assignment way to declare an array
$ array variable name [index value] = data content//The index value (subscript) can be a string or a number
But sometimes, we can also assign values directly to the array,
forum-20160919104018">forum-20160919104018">The array in PHP is actually an ordered map. A map is a type that associates values to the keys. This type is optimized in many ways, so it can be used as a real array, or as a list (vector), a hash (an
The array in PHP is actually an ordered map. A map is a type that associates values to the keys. This type is optimized in many ways, so it can be used as a real array, or as a list (vector), a hash (an implementation of a mapping), a dictionary, a
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