PHP Arrays

An array is a special variable, which can hold more than one value at a time. An array stores multiple values in one single variable. The array() function is used to create an array. 

Types of arrays 

There are three types of array: 

1. Indexed arrays - Arrays with a numeric index. The index can be assigned automatically (index always starts at 0). Syntax: $a = array( value1, value2, ..., value n) 
2. Associative arrays- Associative arrays are arrays that use named keys instead of index to identify record/value. Syntax: $a = array( key1 => value1, key2 =>value2, ...,key n => value n) 
3. Multi-dimensional Arrays- An array containing one or more arrays. PHP can handle multiple levels of multidimensional array.