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How can I check if a URL exists via PHP?
...ders = @get_headers($file);
if(!$file_headers || $file_headers[0] == 'HTTP/1.1 404 Not Found') {
$exists = false;
}
else {
$exists = true;
}
From here and right below the above post, there's a curl solution:
function url_exists($url) {
return curl_init($url) !== false;
}
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How to make a Python script run like a service or daemon in Linux
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15 Answers
15
Active
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Can an array be top-level JSON-text?
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127
Yes, an array is legal as top-level JSON-text.
There are three standard documents defining JS...
android button selector
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217
You just need to set selector of button in your layout file.
<Button
android:id="@+id/...
JSON.parse unexpected character error
...e not parsing a string, you're parsing an already-parsed object :)
var obj1 = JSON.parse('{"creditBalance":0,...,"starStatus":false}');
// ^ ^
// if you want to parse, the input should be a string
var obj2 = {"creditBa...
What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
...sume that any Func passed in as a selector / mutator / etc. is a cheap O(1) operation.
5 Answers
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How does one output bold text in Bash?
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edited Apr 29 '15 at 9:54
gsamaras
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What are the differences between “=” and “
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112
What are the differences between the assignment operators = and <- in R?
As your examp...
Does python have a sorted list?
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edited Dec 7 '18 at 9:57
Arne
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answer...