PHP Array Operation

Array Operators

Array Functions

• array
• array_change_key_case
• extract
• in_array

Variable Handling
is_array
print_runset
var_dump
var_export  

String
explode
implode

POSIX Regex 
split
PCRE Functions
preg_split

Three types of arrays:

• Indexed arrays - Arrays with numeric index
• Associative arrays - Arrays with named keys
• Multidimensional arrays - Arrays containing one or more arrays