isset

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Check if an array item is set in JS

I\'ve got an array var assoc_pagine = new Array(); assoc_pagine[\"home\"]=0; assoc_pagine[\"about\"]=1; assoc_pagine[\"work\"]=2;[详细]

2022-12-26 02:35 分类：问答
isset and !empty not passing through a check for uploaded files

开发者_运维技巧I have an upload form with a file to be uploaded. The issue I have is that even when no file is uploaded the if(isset($_FILES)) OR if(!empty($_FILES)) still passes as successful:[详细]

2022-12-25 08:02 分类：问答
Why do I need the isset() function in php?

I am trying to understand the difference between this: if (isset($_POST[\'Submit\'])) { //do something[详细]

2022-12-23 08:20 分类：问答
PHP isset($this) and using the same object method in a static and object context

I\'m working on a class which needs to be accessible via static function calls as well as object methods. One thing I have found is that I\'m duplicating logic across multiple functions.[详细]

2022-12-21 22:07 分类：问答
Will isset() trigger __get and why?

class a { functio开发者_开发问答n __get($property){...} } $obj = new a(); var_dump(isset($obj->newproperty));[详细]

2022-12-21 06:37 分类：问答
if isset SESSION display div

How do i d开发者_Python百科o in jquery, to check if there\'s anything in isset SESSION user_message, each 1 seconds, and if there is then display #box else dont..[详细]

2022-12-21 02:19 分类：问答
JavaScript isset() equivalent

In PHP you can do if(isset($array[\'foo\'])) { ... }. In JavaScript you often use if(array.foo) { ... } to do the same, but this is not exactly the same statement. The condition will also evaluate to[详细]

2022-12-20 22:21 分类：问答
Running Javascript function after variables are set

I have the following functions: // NATION var x, y, z; function flag(nation,area) { x = nation; this.nation=nation;[详细]

2022-12-20 12:05 分类：问答
PHP error Can't use method return > value in write context

I am getting this error in a PHP class... Fatal error: Can\'t use method return value in write context in[详细]

2022-12-16 20:27 分类：问答
Is there a better solution to check many variables to see if one of them is null in PHP?

On a php file that many variables are received by $_REQUEST[] or $_POST[], and I have to check them in case the value is null with the functio开发者_如何学Cn isset(), it is quite troublesome. Is there[详细]

2022-12-11 18:51 分类：问答