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Best way to test for a variable's existence in PHP; isset() is clearly broken
...f isset().
Since this is takes the array to check as a function argument, PHP will still raise "notices" if the array itself doesn't exist. In some cases, it can validly be argued that each dimension should have been initialised first, so the notice is doing its job. For other cases, a "recursive" ...
Error message Strict standards: Non-static method should not be called statically in php
I have the following php. However when I see the index.php I get the following error message.
7 Answers
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How to check if PHP array is associative or sequential?
PHP treats all arrays as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys?
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`static` keyword inside function?
... found some things I hadn't seen before. I did some initial looking in the php manual, but it didn't explain these examples.
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Are PHP Variables passed by value or by reference?
Are PHP variables passed by value or by reference?
14 Answers
14
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How to prevent XSS with HTML/PHP?
How do I prevent XSS (cross-site scripting) using just HTML and PHP?
9 Answers
9
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PHP - iterate on string characters
...ated array
foreach ($array as $char) {
echo $char;
}
You can check the PHP docs for more information: str_split
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Copy entire contents of a directory to another using php
...ing recursively I found in this note on the copy documentation page:
<?php
function recurse_copy($src,$dst) {
$dir = opendir($src);
@mkdir($dst);
while(false !== ( $file = readdir($dir)) ) {
if (( $file != '.' ) && ( $file != '..' )) {
if ( is_dir($s...
Get operating system info
...perating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out.
7 Answe...
How to search by key=>value in a multidimensional array in PHP
...lue; the ampersand & is crucial.
FYI: If you have an older version of PHP then you have to specify the pass-by-reference part in the call to search_r rather than in its declaration. That is, the last line becomes search_r($subarray, $key, $value, &$results).
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