arrays - Issue with using extract() PHP -

i have dynamically created array , want extract array , put each item own variable.

here's php:

$bar = $_post['foo']; extract($bar); echo $1; 

foo array form made.

whenever run script error:

parse error: syntax error, unexpected '1' (t_lnumber), expecting variable (t_variable) or '$' in /application/... 

when change code to:

$bar = $_post['foo']; extract($bar, extr_prefix_all, "bar_"); echo $bar_1; 

i undefined variable error.

please me.

update:

my first code informational, person might come across question problem not knowing what's wrong. second piece of code actual code.

m intention input each array item different field in mysql table. haven't written full code yet since extract() thing doesn't seem working.

update 2:

$_post['foo'] array of checkbox values

variables in php cannot start numbers:

echo $1; 

that's invalid , throw error.

you're using extract improperly in you're using on may or may not array. have no guarantee $_post['foo'] associative array(and it's not), array type extract works on. extract uses keys associative array create new variables.