4招教你破解曖昧謎題
PHP: isset - Manual - PHP: Hypertext Preprocessor有時男人模棱兩可的主動熱情實在讓人摸不著頭腦,藍顏知己和戀人往往只在一線之隔,如果不想與曖昧的感情糾纏不清,這時一定要擦亮眼睛看清楚。他到底是哥們兒還是對你令有企圖,悅己教你只用4招,就能對他的真實用心一目瞭然! 判斷他只是出於單純的朋友身份關心你,還是包含著別有深意的感情在其Determine if a variable is set and is not NULL. If a variable has been unset with unset(), it will no longer be set. isset() will return FALSE if testing a variable that has been set to NULL. Also note that a null character ("\0") is not equivalent to...
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