Static keyword doesn't work inside PHP generator function -

it seems static keyword not work inside generator functions? in php 5.5:

function static_fn () {     static $p = 0;     echo "\nstatic_fn: p = " . $p . "\n" ;     $p++; } echo "calling static_fn()\n"; static_fn(); echo "calling static_fn()\n"; static_fn();  function static_gen() {     static $p = 0;     echo "\nstatic_gen: p = " . $p . "\n" ;     yield $p; }  echo "calling static_gen()\n"; foreach(static_gen() $stuff) {     echo $stuff . "\n"; }  echo "calling static_gen()\n"; foreach(static_gen() $stuff) {     echo $stuff . "\n"; } 

i result

calling static_fn()  static_fn: p = 0 calling static_fn()  static_fn: p = 1 calling static_gen()  static_gen: p = 0 0 calling static_gen()  static_gen: p = 0 0 

that is, static keyword worked static_fn function returned 0 , 1 consecutive calls, did not work static_gen function reinitialised 0 in each call.

does know why so, , how 1 might work around replicate static variables in generator?

try this:

function static_gen() {     static $p = 0; #initialised     while ($p < 10) { #yield while $p smaller 10       $p++; #increased       echo "\nstatic_gen: p = " . $p . "\n" ;       yield $p; #yield value      } }  

that work.

sidenote: generator function must yield values long values given. function must provide in 1 or other way.