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How can I check if a URL exists via PHP?

...returned by get_headers() are well formed. Use curl (if you can). Prevent fetching the entire body/content, but only request the headers. Consider redirecting urls: Do you want the first code returned? Or follow all redirects and return the last code? You might end up with a 200, but it could redire...
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cleanest way to skip a foreach if array is empty [duplicate]

...anguage. PHP variable can store anything, that's why is_array, is_numeric, etc are needed functions. – Daniel Wu Nov 22 '19 at 5:41 add a comment  |  ...
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Loop code for each file in a directory [duplicate]

... Try GLOB() $dir = "/etc/php5/*"; // Open a known directory, and proceed to read its contents foreach(glob($dir) as $file) { echo "filename: $file : filetype: " . filetype($file) . "<br />"; } ...
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How do you debug PHP scripts? [closed]

... Platform. That gives proper debugging, breakpoints/stepping over the code etc., although at a price. share answered Aug 3 '08 at 23:20 ...
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How do PHP sessions work? (not “how are they used?”)

...ions in PHP are started by using the session_start( ) function. Like the setcookie( ) function, the session_start( ) function must come before any HTML, including blank lines, on the page. It will look like this: <?php session_start( );?><html><head> ....... etc The session_star...
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Why are functions and methods in PHP case-insensitive?

...parser slowly grew to include conditional tags, then loop tags, functions, etc. At no point did I think I was writing a scripting language. I was simply adding a little bit of functionality to the macro replacement parser. I was still writing all my real business logic in C. I have read somewhere t...
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How does “do something OR DIE()” work in PHP?

... anybody anything or giving you any opportunity to record the event, retry etc. share | improve this answer | follow | ...
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How to set HTTP headers (for cache-control)?

...sers will tend to store no-cache pages to enable back button functionality etc. – MrWhite Apr 1 '15 at 8:08 3 ...
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Get a list of URLs from a site [closed]

...ery parameters, server-side rewritten URLs, or any kind of include/require/etc. assembling of pages, this won't really work. – T.J. Schuck Jun 24 '11 at 19:41 ...
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Going from a framework to no-framework [closed]

...code available on Wikipedia. You can also use the httponly attribute with setcookie(). Nothing fancier than basic templating and header-setting is required for new HTTP and HTML5 features: HTTP Strict Transport Security (Helps protect against WiFi exploits.) X-Frame-Options (Restrict embedding of...