http://php.net/empty. The following things are considered to be empty: "" (an empty string); 0 (0 as an integer); 0.0 (0 as a float); "0" (0 ... ... <看更多>
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http://php.net/empty. The following things are considered to be empty: "" (an empty string); 0 (0 as an integer); 0.0 (0 as a float); "0" (0 ... ... <看更多>
之所以會有這篇比較基礎的文章,是因為去年在面試時,曾經被問到isset、empty、is_null 三者的差別,但當時因為太依賴PHP 官方的比對表,一時之間答得 ... ... <看更多>
The second one is empty(), which not only checks for the existence of the array index, but also that the value that contains is not empty (not NULL, 0, ... ... <看更多>
function default_value($var, $default) { return empty($var) ? $default : $var; } $newsItems[0]['image_url'] = default_value ... ... <看更多>
In this video I create a simple way to check for data that needs to be entered into required form fields by using the EMPTY function. ... <看更多>