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best way to determine if a URL is an image in PHP

Using PHP, given a URL, how can I determine whether it is an image? There is no context for the URL - it is ... } fclose($fp); return false; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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best way for storing the token in flutter

sir i have question witch one batter way in store the token in flutter...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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best way to access a hash inside a Ruby module

I'm using a module to encapsulate a set of variables and methods related with those variables. One of these variables is ... .hash_a[:key1]=2 MyModule.hash_a[:key1] # 2 Thanks...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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