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@- Added array_filter(), which allows filtering of array elements via

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@  the specified callback. (Andrei)
This commit is contained in:
Andrei Zmievski 2001-03-16 20:46:33 +00:00
parent f7f2cf9de5
commit 770c66125d
3 changed files with 78 additions and 0 deletions
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76
ext/standard/array.c
View File

@ -2887,6 +2887,82 @@ PHP_FUNCTION(array_reduce)
*return_value = *result;
}
/* }}} */
/* {{{ proto array array_filter(array input [, mixed callback])
Filters elements from the array via the callback. */
PHP_FUNCTION(array_filter)
{
zval **input, **callback = NULL;
zval **operand;
zval **args[1];
zval *retval = NULL;
char *callback_name;
char *string_key;
ulong string_key_len;
ulong num_key;
HashPosition pos;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 2 ||
zend_get_parameters_ex(ZEND_NUM_ARGS(), &input, &callback) == FAILURE) {
WRONG_PARAM_COUNT;
}
if (Z_TYPE_PP(input) != IS_ARRAY) {
php_error(E_WARNING, "%s() expects argument 1 to be an array",
get_active_function_name());
return;
}
if (ZEND_NUM_ARGS() > 1) {
if (!zend_is_callable(*callback, 0, &callback_name)) {
php_error(E_WARNING, "%s() expects argument 2, '%s', to be a valid callback",
get_active_function_name(), callback_name);
efree(callback_name);
return;
}
}
array_init(return_value);
if (zend_hash_num_elements(Z_ARRVAL_PP(input)) == 0)
return;
for (zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(input), &pos);
zend_hash_get_current_data_ex(Z_ARRVAL_PP(input), (void **)&operand, &pos) == SUCCESS;
zend_hash_move_forward_ex(Z_ARRVAL_PP(input), &pos)) {
if (callback) {
args[0] = operand;
if (call_user_function_ex(EG(function_table), NULL, *callback, &retval, 1, args, 0, NULL) == SUCCESS && retval) {
if (!zend_is_true(retval)) {
zval_ptr_dtor(&retval);
continue;
} else
zval_ptr_dtor(&retval);
} else {
php_error(E_WARNING, "%s() had an error invoking the reduction callback", get_active_function_name());
return;
}
} else if (!zend_is_true(*operand))
continue;
zval_add_ref(operand);
switch (zend_hash_get_current_key_ex(Z_ARRVAL_PP(input), &string_key, &string_key_len, &num_key, 0, &pos)) {
case HASH_KEY_IS_STRING:
zend_hash_update(Z_ARRVAL_P(return_value), string_key,
string_key_len, operand, sizeof(zval *), NULL);
break;
case HASH_KEY_IS_LONG:
zend_hash_index_update(Z_ARRVAL_P(return_value), num_key,
operand, sizeof(zval *), NULL);
break;
}
}
}
/* }}} */
/*
* Local variables:

1
ext/standard/basic_functions.c
View File

@ -581,6 +581,7 @@ function_entry basic_functions[] = {
PHP_FE(array_intersect, NULL)
PHP_FE(array_diff, NULL)
PHP_FE(array_sum, NULL)
PHP_FE(array_filter, NULL)
/* aliases from array.c */
PHP_FALIAS(pos, current, first_arg_force_ref)

1
ext/standard/php_array.h
View File

@ -75,6 +75,7 @@ PHP_FUNCTION(array_unique);
PHP_FUNCTION(array_intersect);
PHP_FUNCTION(array_diff);
PHP_FUNCTION(array_sum);
PHP_FUNCTION(array_filter);
HashTable* php_splice(HashTable *, int, int, zval ***, int, HashTable **);
PHPAPI void php_array_merge(HashTable *dest, HashTable *src, int recursive);