The methods to define arrays in PHP are: 1. PHP defines the format of the array, the code is [array name=array()]; 2. PHP output array method, the code is [foreach($aa as $val) {echo$val;}].
The methods to define arrays in PHP are:
1. The format of PHP array definition:
数组名=array();
For example: $aa=array();//This defines an array,
then assigns values to the elements:
$aa[0]="9016"; $aa[1]="9017"; $aa[2]="9018";
2, PHP Method of outputting an array:
foreach($aa as $val) { echo$val; }
You can also directly assign a value when defining the array
$aa=array(0=>"9016",1=>"9017";2=>"9018");
3. PHP arrays can also be subscripted with characters, not necessarily numbers. :
$aa["name"]="Joan"; $aa["num"]="9018"; $aa["email"]=<a href="mailto:abc@abc.com" rel="external nofollow">abc@abc.com</a>;
You can also define the elements of a one-dimensional array as an array, which is a two-dimensional array.
$aa=array("name"=>"joan","num"=>"9018","email"=><a href="mailto:abc@abc.com" rel="external nofollow">abc@abc.com</a>);
At this time, $ cc[0] is also an array, $cc[1] is also an array, and $cc is a two-dimensional array.
Similarly, three-dimensional and four-dimensional arrays can also continue to be defined.
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