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How to get the file extension in PHP? [duplicate]
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'Only variables should be passed by reference', the PHP Manual
– dader
Dec 20 '12 at 2:01
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Using $_POST to get select option value from HTML
... Where do I put the $selectOption = $_POST['taskOption']; I put it in the php but it does nothing....
– Yunfei Chen
2 days ago
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PHP cURL custom headers
I'm wondering if/how you can add custom headers to a cURL HTTP request in PHP. I'm trying to emulate how iTunes grabs artwork and it uses these non-standard headers:
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Have nginx access_log and error_log log to STDOUT and STDERR of master process
...y success. Tried to change everything (daemon modes, users, nginx versions etc). It just does not work for me. """open() "/dev/stderr" failed (6: No such device or address)""" (same issues with stdout, but nginx should output to stderr according to docs)
– Ivan Kleshnin
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Do AJAX requests retain PHP Session info?
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If PHP error reporting is turned on, you can get a session error returned with the AJAX response. I've been intermittently getting a Warning: session_write_close(): Failed to write session data (user) error lately in a project, ...
String comparison using '==' vs. 'strcmp()'
It seems that PHP's === operator is case sensitive. So is there a reason to use strcmp() ?
13 Answers
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Limit file format when using ?
...h that extension. Extensions !== mime types
– Matt Fletcher
Sep 11 '19 at 11:11
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In php, is 0 treated as empty?
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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 as a string)
NULL
FALSE
array() (an empty array)
var $var; (a variabl...
Regular expression for letters, numbers and - _
...ollow your specification, but note that this will match things like ....., etc, which may or may not be what you desire. If you can be more specific what pattern you want to match, the regex will be slightly more complicated.
The above regex also matches the empty string. If you need at least one c...
PHP equivalent of .NET/Java's toString()
How do I convert the value of a PHP variable to string?
24 Answers
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