Understanding the components of an array: elements, keys, and values.
Defining an array in your programs two ways: with array(
) and with square brackets.
Understanding the shortcuts PHP provides for arrays with numeric keys.
Counting the number of elements in an array.
Visiting each element of an array with foreach( ).
Alternating table row colors with foreach( ) and
an array of color values.
Modifying array element values inside a foreach( )
code block.
Visiting each element of a numeric array with for(
).
Alternating table row colors with for( ) and the
modulus operator (%).
Understanding the order in which foreach( ) and
for( ) visit array elements.
Checking for an array element with a particular key.
Checking for an array element with a particular value.
Interpolating array element values in strings.
Removing an element from an array.
Generating a string from an array with implode( ).
Generating an array from a string with explode( ).
Sorting an array with sort( ), asort(
), or ksort( ).
Sorting an array in reverse.
Defining a multidimensional array.
Accessing individual elements of a multidimensional array.
Visiting each element in a multidimensional array with
foreach( ) or for( ).
Interpolating multidimensional array elements in a string.
