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How do I convert a PDF document to a preview image in PHP? [closed]
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You need ImageMagick and GhostScript
<?php
$im = new imagick('file.pdf[0]');
$im->setImageFormat('jpg');
header('Content-Type: image/jpeg');
echo $im;
?>
The [0] means page 1.
sha...
Unexpected results when working with very big integers on interpreted languages
...et the sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
36 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&...
PHP Sort a multidimensional array by element containing date
...compare")), so that usort() knows it's a class function/method. See also: php.net/manual/en/…
– Ferdinand Beyer
May 26 '10 at 16:26
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How to use a switch case 'or' in PHP
Is there a way of using an 'OR' operator or equivalent in a PHP switch?
10 Answers
10
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How do you set up use HttpOnly cookies in PHP
How can I set the cookies in my PHP apps as HttpOnly cookies ?
10 Answers
10
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Run php script as daemon process
I need to run a php script as daemon process (wait for instructions and do stuff). cron job will not do it for me because actions need to be taken as soon as instruction arrives. I know PHP is not really the best option for daemon processes due to memory management issues, but due to various reasons...
十张图读懂 PHP、Python、 Ruby 三大语言的差异 - 更多技术 - 清泛网 - 专...
十张图读懂 PHP、Python、 Ruby 三大语言的差异php-vs-python-vs-ruby-comparison图1、PHP vs Python vs Ruby: 市场份额Winner - PHP图2、PHP vs Python vs Ruby: 主流网站使用情况Winner - 平局图3、PHP v 图1、PHP vs Python vs Ruby: 市场份额
Winner - PHP
图2、P...
How to fix “Headers already sent” error in PHP
... / setrawcookie
Output can be:
Unintentional:
Whitespace before <?php or after ?>
The UTF-8 Byte Order Mark specifically
Previous error messages or notices
Intentional:
print, echo and other functions producing output
Raw <html> sections prior <?php code.
Why does it...
PHP - how to best determine if the current invocation is from CLI or web server?
I need to determine whether the current invocation of PHP is from the command line (CLI) or from the web server (in my case, Apache with mod_php).
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