PHP マニュアル
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# Booleans

Booleans are created just like longs, but have the type `IS_BOOL`. Allowed values in `lval` are `0` and `1`:

    zval *new_bool;

    MAKE_STD_ZVAL(new_bool);

    new_bool->type = IS_BOOL;
    new_bool->value.lval = 1;

The corresponding macros for this type are `ZVAL_BOOL` (allowing specification of the value) as well as `ZVAL_TRUE` and `ZVAL_FALSE` (which explicitly set the value to `TRUE` and `FALSE`, respectively).

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Strings | 上に戻る | Arrays