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Notes $func = ‘foo’;
$func(); // This calls foo()

$func = ‘bar’;
$func(‘test’); // This calls bar()
$func = ‘echoit’;

$func(‘test’); // This calls echoit()
?>
An object method can also be called with the variable functions syntax.
Example: Variable method.

<?php

class Foo
{ function Variable()
{
$name = ‘Bar’;

$this->$name(); // This calls the Bar() method
}

function Bar()
{
echo “This is Bar”;
}

}
$foo = new Foo();
$funcname = “Variable”;

$foo->$funcname(); // This calls $foo->Variable()
?>

4.7 Category of PHP Functions

This is a list of functions provided by PHP’s built-in extensions, grouped by category. Some
functions fall under more than one header.
Arrays
array, array_count_values, array_diff, array_filter, array_flip, array_intersect, array_keys, array_
map, array_merge,array_merge_recursive, array_multisort, array_pad, array_pop, array_push,
array_rand, array_reduce, array_reverse, array_search,array_shift, array_slice, array_splice,
array_sum, array_unique, array_unshift, array_values, array_walk, arsort, asort, compact,
count,current, each, end, explode, extract, implode, in_array, key, key_exists, krsort, ksort, list,
natcasesort, natsort, next, pos, prev, range,reset, rsort, shuffle, sizeof, sort, uasort, uksort, usort

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