dongneng5383 2013-11-16 16:49
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将匿名函数转换为5.2 create_function

I'm attempting to convert:

usort($discounts, function ($a, $b) use ($c, $d){

    $value1 = $c->do_action($a, $d, $d->value);
    $value2 = $c->do_action($b, $d, $d->value);
    return $value1 == $value2 ? 0 : ($value1 > $value2 ? 1 : -1);
});

Into a function that can be used in 5.2

Which so far I assumed I could do like this:

create_function( '$a, $b use ($that, $d)', ' $value1 = $c->do_action($a, $d, $d->value); $value2 = $c->do_action($b, $d, $d->value);return $value1 == $value2 ? 0 : ($value1 > $value2 ? 1 : -1);');

but you can't do use($c,$d) inside the first param.

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  • doudou130216 2013-11-16 16:51
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    Although not an ideal solution you should be able to use the global keyword to accomplish what you need:

    create_function( '$a, $b', ' global $c, $d; $value1 = $c->do_action($a, $d, $d->value); $value2 = $c->do_action($b, $d, $d->value);return $value1 == $value2 ? 0 : ($value1 > $value2 ? 1 : -1);');
    
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