Php common array application description (1/2) _ PHP Tutorial

Php common array application description (12 ). Ange ($ low, $ high), range ($ low, $ high, $ step); create an array of sequential values, for example, range () is) for example, range (a, z) each ($ array) returns the current element of the array in sequence, and returns the next ange ($ low, $ high), range ($ low, $ high, $ step); // create an array of sequential values, for example, range () is (,) and range ('A', 'z ')

Each ($ array) returns the current element of the array in sequence, and sets the next element as the current element;

Reset ($ array) to reset the current element of the array to the beginning of the array

List () can be used to break an array into a series of values, such as list ($ a, $ B) = each ($ array)

Shuffle ($ array), array_rand ($ arg, $ num_req); random sorting of arrays

Array_reverse ($ input), array_reverse ($ input, $ preserve_keys) returns the reverse sorting of the original array

Sort ($ array); sorts arrays

Php Tutorial array is an important concept. it contains a large number of functions to facilitate people's development... Now we classify its arrays to facilitate query and application.
Let's talk about the definition of php array... The php array contains two items: key and value. you can use the key to obtain the corresponding value. The key can be a value and associated, for example, $ array [0]. $ array [one]…
Create an array
The array declaration in php is a little different from that in other languages, but it can also be declared as one-dimensional, two-dimensional, three-dimensional and multi-dimensional, such
$ Array [0] = 1, $ array = array (, 3); one-dimensional array, which contains only three values and belongs to a numeric array, $ array [0] can be used to represent 1 during Reference. indexes can be omitted when a numeric array is created.

$ Array = array (
1 => "one ",
2 => "two ",
3 => "three ",
4 => array (
"One" => 1,
"Two" => 2,
"Three" => 3
)
);

A two-dimensional array is also an associated array. you can use $ array [4] ["one"] to represent 1.
3D or above...
If you want to create arrays in batches, you can use the following function:
Array range (mixed low, mixed high [, number step])
For example, $ array = range (); indicates array );
$ Array = range (a, f); represents array (a, B, c, d, e, f );

Output array
Php outputs many array functions, commonly used
Bool print_r (mixed expression [, bool return])
Void var_dump (mixed expression [, mixed expression [,...])
Also, echo, print, and printf can output a single array.

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Http://www.bkjia.com/PHPjc/631343.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/631343.htmlTechArticleange ($ low, $ high), range ($ low, $ high, $ step); // create an array of sequential values such as: range () is) for example, range ('A', 'z') each ($ array) returns the current element of the array in sequence, and returns the next...