*/privateint $index;publicfunction__construct(array $collection){$this->collection=$collection;$this->index=count($this->collection)-1;}publicfunctiongetCurrent(){if(isset($this->collection[$this->index])){return$this->collection[$this->index];}return'当前没有元素';}publicfunctiongetNext(){...
<?php $authors = array("A","B","C","D"); $lastIndex = count($authors)-1; echo $authors[$lastIndex]; // Displays"D" ?>//ww w . j a v a 2s.c o m Result An indexed array with four elements doesn't mean that the last element has an index of 3!
AI代码解释 // main/spprintf.cstaticvoidxbuf_format_converter(void*xbuf,zend_bool is_char,constchar*fmt,va_list ap){// ...case'p':if(sizeof(char*)<=sizeof(u_wide_int)){ui_num=(u_wide_int)((size_t)va_arg(ap,char*));s=ap_php_conv_p2(ui_num,4,'x',&num_buf[NUM_BUF_SI...
=num_values) {20php_error_docref(NULL, E_WARNING,"Both parameters should have an equal number of elements");21RETURN_FALSE;22}2324//初始化返回值(数组)25array_init_size(return_value, num_keys);2627//空数组,函数中止28if(!num_keys) {29return;30}31//循环遍历第一个数组32ZEND_HASH_FOR...
The PHP array_keys() function returns keys of a given array. You can also specify a value, so that array_keys() returns only those keys whose value matched this value.
$arguments = func_get_args(); $func_overloading = ini_get("mbstring.func_overload"); ini_set("mbstring.func_overload", 0); $ret = call_user_func_array(array_shift($arguments), $arguments); ini_set("mbstring.func_overload", $func_overloading); return $ret;}官方...
The array elements must use zero-based integer keys. public array $allModels = null $key public property The column that is used as the key of the data models. This can be either a column name, or a callable that returns the key value of a given data model. If this is not set,...
No? Consider this example. Suppose we also needed to add all of the values within the array. So, we need add function:1 function add(float $a, float $b): float { 2 return $a + $b; 3 } Now, without fiddling with the internals of the function, I use the adder to reduce the ...
❮ PHP Array Reference ExampleGet your own PHP Server Create an indexed array named $cars, assign three elements to it, and then print a text containing the array values: <?php $cars=array("Volvo","BMW","Toyota"); echo"I like ". $cars[0] .", ". $cars[1] ." and ". $cars...
The key is composed of the prefix followed by the session ID. auth (string, or an array with one or two elements): used to authenticate with the server prior to sending commands. database (integer): selects a different database. Sessions have a lifetime expressed in seconds and stored ...