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How to get first 5 characters from string [duplicate]
How to get first 5 characters from string using php
5 Answers
5
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What are the disadvantages of using persistent connection in PDO
...de persistent using the PDO::ATTR_PERSISTENT attribute. According to the php manual -
8 Answers
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Manipulate a url string by adding GET parameters
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Basic method
$query = parse_url($url, PHP_URL_QUERY);
// Returns a string if the URL has parameters or NULL if not
if ($query) {
$url .= '&category=1';
} else {
$url .= '?category=1';
}
More advanced
$url = 'http://example.com/search?keyword=test&...
How to prevent http file caching in Apache httpd (MAMP)
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I had the same issue, but I found a good solution here:
Stop caching for PHP 5.5.3 in MAMP
Basically find the php.ini file and comment out the OPCache lines.
I hope this alternative answer helps others else out as well.
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Reference: What is variable scope, which variables are accessible from where and what are “undefined
What is "variable scope" in PHP? Are variables from one .php file accessible in another? Why do I sometimes get "undefined variable" errors?
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Removing X-Powered-By
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I think that is controlled by the expose_php setting in PHP.ini:
expose_php = off
Decides whether PHP may expose the fact that it is installed on the server (e.g. by adding its signature to the Web server header). It is no security threat in any way, but it ma...
When to use single quotes, double quotes, and backticks in MySQL
...delimiter in date strings.
So using your example, I would double-quote the PHP string and use single quotes on the values 'val1', 'val2'. NULL is a MySQL keyword, and a special (non)-value, and is therefore unquoted.
None of these table or column identifiers are reserved words or make use of charac...
How can I select and upload multiple files with HTML and PHP, using HTTP POST?
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This is possible in HTML5. Example (PHP 5.4):
<!doctype html>
<html>
<head>
<title>Test</title>
</head>
<body>
<form method="post" enctype="multipart/form-data">
<input ...
Is there any particular difference between intval and casting to int - `(int) X`?
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(int) is faster than intval(), according to wiki.phpbb.com/Best_Practices:PHP
– Martin Thoma
Sep 1 '11 at 11:33
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How do I close a connection early?
...at the process has started, but JQuery won't return the response until the PHP script is done running.
19 Answers
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