PHP. Руководство по PHP. 2005

Booleans

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Глава 53. Creating Variables

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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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