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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...
Is == in PHP a case-sensitive string comparison?
I was unable to find this on php.net. Is the double equal sign ( == ) case sensitive when used to compare strings in PHP?
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How to remove duplicate values from an array in PHP
How can I remove duplicate values from an array in PHP?
24 Answers
24
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Makefile经典教程（入门必备） - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...归定义，这是很不好的，所以make会自动为我们解决这个问题，我们不必担心这个问题。
五、override 指示符
如果有变量是通常make的命令行参数设置的，那么Makefile中对这个变量的赋值会被忽略。如果你想在Makefile中设置这类...
Difference between var_dump,var_export & print_r
...2] => 42
[3] => Array ([0] => 42)
)
var_export prints valid php code. Useful if you calculated some values and want the results as a constant in another script. Note that var_export can not handle reference cycles/recursive arrays, whereas var_dump and print_r check for these. var_exp...
Laravel blank white screen
My laravel site was working before, I recently upgraded to Apache 2.4 and PHP 5.5.7.
31 Answers
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JSON: why are forward slashes escaped?
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PHP escapes forward slashes by default which is probably why this appears so commonly. I'm not sure why, but possibly because embedding the string "</script>" inside a <script> tag is considered unsafe.
This func...
How to exclude file only from root folder in Git
...ignore file to exclude some files being added, but I have several config.php files in source tree and I need to exclude only one, located in the root while other keep under revision control.
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Hidden Features of MySQL
...SQL/Q_22967482.html
http://www.databasejournal.com/features/mysql/article.php/10897_3355201_2
GRANT REPLICATION SLAVE ON . to slave_user IDENTIFIED BY 'slave_password'
#Master Binary Logging Config STATEMENT causes replication
to be statement-based - default
log-bin=Mike
binlog-...
What's quicker and better to determine if an array key exists in PHP?
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@FrancescoPasa Well, "search for the keys" is what PHP documentation says. Other than that, I can't tell if "search" to them means something completely different to what it means to me.
– Rain
Apr 22 at 6:09
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