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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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using gitignore to ignore (but not delete) files
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It sounds like you are trying to track a file (e.g. index.php), add it to a remote repository, then stop watching tracking it, while keeping the file in the remote (i.e. keep index.php unchanged on the remote repo while changing it locally).
From what I understand, git cannot do th...
Java: function for arrays like PHP's join()?
I want to join a String[] with a glue string. Is there a function for this?
22 Answers
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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...
What are the best PHP input sanitizing functions?
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Stop!
You're making a mistake here. Oh, no, you've picked the right PHP functions to make your data a bit safer. That's fine. Your mistake is in the order of operations, and how and where to use these functions.
It's important to understand the difference between sanitizing and validating u...
php 实时显示当前时间 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php 实时显示当前时间网上找了许多办法都行不通，经过半天的折腾。终于弄出来下面能够实时显示当前时间，代码如下：<?php ob_end_flush(); 关闭php缓存，或...网上找了许多办法都行不通，经过半天的折腾。终于弄出来下面能够...
PHP prepend leading zero before single digit number, on-the-fly [duplicate]
PHP - Is there a quick, on-the-fly method to test for a single character string, then prepend a leading zero?
3 Answers
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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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Import a file from a subdirectory?
...nguage shouldn't impose its way of loading files across the filesystem. In PHP we solved the problem by letting the userland code register multiple autoloading functions that are called when a namespace/class is missing. Then the community has produced the PSR-4 standard and Composer implements it, ...