// Declare an empty array $empty_array = array (); // Condition to check array is empty or not if (! empty ( $non_empty_array )) echo "Given Array is not empty " ; if ( empty ( $empty_array )) echo "Given Array is empty" ; ?> 输出如下: Given Array is not empty Given ...
的方法是使用empty()函数。该函数用于检查一个变量是否为空,如果为空则返回true,否则返回false。 在检查数组中是否有一个值为空时,可以使用循环遍历数组的每个元素,并使用empty()函数进行判断。以下是一个示例代码: 代码语言:txt 复制 function checkArrayEmpty($array) { foreach ($array as $value) { ...
The code below demonstrates how to use the count function to check if an array is empty. We first create an empty array to test. Second, we havean if statementwith the condition that if the count of the array is 0 (empty), then run the code inside the block. Inside the code block,...
To check whether an array is empty or not, we can use a built-in function empty(), in other cases where we want to check if a given variable is empty or not, it can also be used. It returns a Boolean response based on the condition that if the given variable contains a non-...
Usesizeof()Function to Check Whether an Array Is Empty in PHP We can also use the built-in functionsizeof()to check whether an array is empty or not. Thesizeof()function helps in finding the size in numbers. What we will do is that we will find the size of the array. If the si...
}if(array_empty($options)) {return$default; }if(isset($options[$name])) {return$options[$name]; }return$default; } 开发者ID:phucanh92,项目名称:vietlong,代码行数:19,代码来源:general.php 示例5: array_empty ▲点赞 1▼ /** * Check if an array is empty ...
或者count($data)返回数组的大小。如果你不确定变量是否是数组，你可以先检查类型，然后检查大小。
示例6: checkArray ▲点赞 1▼ functioncheckArray($array){foreach($arrayas$value) {if(is_array($value)) {if(count($value)) {if(!checkArray($value)) {returnfalse; } } }else{ $value = trim($value);if(!empty($value)) {returnfalse; ...
1=> is empty2=> is empty3=> is empty4=>Array is empty5=> is empty6=> is empty7=>0 is empty8=>0 is empty**/?> up down 88 Janci ¶ 12 years ago Please note that results of empty() when called on non-existing / non-public variables of a class are a bit confusing ...
$aUsers=$this->readToArray(' SELECT `userID` FROM `users` WHERE `userID` IN(SELECT `userID` FROM `users_indvSettings` WHERE `indvSettingID`=5 AND `optionID`='.$time.') AND `email`!="" '); Is this the best way to check for an empty field in SQL? I've just tried "IS...