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PHP check whether property exists in object or class
I understand PHP does not have a pure object variable, but I want to check whether a property is in the given object or class.
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How to get a variable name as a string in PHP?
Say i have this PHP code:
24 Answers
24
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Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...试图同时用生理学和计算机的手段，双管齐下，研究视觉问题。
他们收集了很多黑白风景照片，从这些照片中，提取出400个小碎片，每个照片碎片的尺寸均为 16x16 像素，不妨把这400个碎片标记为 S[i], i = 0,.. 399。接下来，...
How to force the browser to reload cached CSS/JS files?
...it, there's no pain in figuring out which version you need to return to in order for your visitors not to re-download.
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Passing base64 encoded strings in URL
...ommend just writing your own helpers. Like these from the comments on the php manual page for base64_encode:
function base64_url_encode($input) {
return strtr(base64_encode($input), '+/=', '._-');
}
function base64_url_decode($input) {
return base64_decode(strtr($input, '._-', '+/='));
}
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How do I log errors and warnings into a file?
...ile, but to set up all of that within the script (not changing anything in php.ini)?
7 Answers
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How to resolve “must be an instance of string, string given” prior to PHP 7?
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Prior to PHP 7 type hinting can only be used to force the types of objects and arrays. Scalar types are not type-hintable. In this case an object of the class string is expected, but you're giving it a (scalar) string. The error messa...
Getting the first character of a string with $str[0]
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Does PHP $str[0] take into account that there can be 2Byte long chars? UTF and such? (even though substr() does not help with it either!)
– Tomer W
Jun 26 '13 at 13:29
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What's the difference between :: (double colon) and -> (arrow) in PHP?
There are two distinct ways to access methods in PHP, but what's the difference?
6 Answers
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Enabling error display in PHP via htaccess only
...n to the log file and then add the code
<Files php_errors.log>
Order allow,deny
Deny from all
Satisfy All
</Files>
at the end of .htaccess.
This will protect your log file.
These options are suited for a development server. For a production server you should not displa...