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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" ...
防挂马：apache禁止访问文件或目录执行权限、禁止运行脚本PHP文件的设置方...
...挂马：apache禁止访问文件或目录执行权限、禁止运行脚本PHP文件的设置方法我们来看俩段通常对上传目录设置无权限的列子,配置如下:代码如下:<Directory " var www upload"><FilesMatch " PHP">Order Allow,DenyDe 我们来看俩段通常对上传目录设...
How can I capture the result of var_dump to a string?
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Use output buffering:
<?php
ob_start();
var_dump($someVar);
$result = ob_get_clean();
?>
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How to create cron job using PHP?
...ant to create a cron job that will execute my code every minute. I'm using PHP to create it. It is not working.
12 Answers
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Performance of foreach, array_map with lambda and array_map with static function
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FWIW, I just did the benchmark since poster didn't do it. Running on PHP 5.3.10 + XDebug.
UPDATE 2015-01-22 compare with mcfedr's answer below for additional results without XDebug and a more recent PHP version.
function lap($func) {
$t0 = microtime(1);
$numbers = range(0, 1000000);
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PHP Sort Array By SubArray Value
...- $b["optionNumber"];
}
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usort($array, "cmp_by_optionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
return $a['optionNumber'] - $b['optionNumber'];
});
Note that both code above assume $a['optionNumber'] is an integer. Use @St...
Why would one omit the close tag?
I keep reading it is poor practice to use the PHP close tag ?> at the end of the file. The header problem seems irrelevant in the following context (and this is the only good argument so far):
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How to increase the execution timeout in php?
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You need to change some setting in your php.ini:
upload_max_filesize = 2M
;or whatever size you want
max_execution_time = 60
; also, higher if you must - sets the maximum time in seconds
Were your PHP.ini is located depends on your environment, more informatio...
Alternative for PHP_excel
Is there any alternative for PHP_excel which can "Export to XLSX/XLS" file in a customized format?
2 Answers
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How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?
...I delete a directory and its entire contents (files and subdirectories) in PHP?
21 Answers
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