PHP Handbuch
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Objects

Since objects can be converted to arrays (and vice versa), you might have already guessed that they have a lot of similarities to arrays in PHP. Objects are maintained with the same hash functions, but there's a different API for creating them.

To initialize an object, you use the function object_init(): 
zval *new_object;

MAKE_STD_ZVAL(new_object);

if(object_init(new_object) != SUCCESS)
{
    // do error handling here
}
You can use the functions described in Tabelle 35-4 to add members to your object.

Tabelle 35-4. Zend's API for Object Creation

FunctionDescription
add_property_long(zval *object, char *key, long l);()Adds a long to the object.
add_property_unset(zval *object, char *key);()Adds an unset property to the object.
add_property_bool(zval *object, char *key, int b);()Adds a Boolean to the object.
add_property_resource(zval *object, char *key, long r);()Adds a resource to the object.
add_property_double(zval *object, char *key, double d);()Adds a double to the object.
add_property_string(zval *object, char *key, char *str, int duplicate);()Adds a string to the object.
add_property_stringl(zval *object, char *key, char *str, uint length, int duplicate);()Adds a string of the specified length to the object. This function is faster than add_property_string() and also binary-safe.
add_property_zval(zval *obect, char *key, zval *container):() Adds a zval container to the object. This is useful if you have to add properties which aren't simple types like integers or strings but arrays or other objects.
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