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MySQL integer field is returned as string in PHP
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When you select data from a MySQL database using PHP the datatype will always be converted to a string. You can convert it back to an integer using the following code:
$id = (int) $row['userid'];
Or by using the function intval():
$id = intval($row['userid']);
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PHP filesize MB/KB conversion [duplicate]
How can I convert the output of PHP's filesize() function to a nice format with MegaBytes, KiloBytes etc?
12 Answers
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PHP: How to use array_filter() to filter array keys?
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PHP 5.6 introduced a third parameter to array_filter(), flag, that you can set to ARRAY_FILTER_USE_KEY to filter by key instead of value:
$my_array = ['foo' => 1, 'hello' => 'world'];
$allowed = ['foo', 'bar'];
$filte...
php array为空的判断 - C/C++ - 清泛网 - 专注C/C++及内核技术
php array为空的判断如何判断PHP数组是否为空PHP判断数组为空首选方法：count($arr),size($arr);$arr= array("");echo count($arr);echo size($arr); 输出1...如何判断PHP数组是否为空
PHP判断数组为空首选方法：count($arr), size($arr);
$arr= array("");
ec...
PHP完美实现GIF动画缩略图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
PHP完美实现GIF动画缩略图缩略图是个很常用的功能。它的实现并不复杂，但如果原图是GIF动画的话，问题就会变得繁琐一点，下面通过一个取自CS警匪游戏的GIF动画来说明...缩略图是个很常用的功能。它的实现并不复杂，但如果...
PHP获取图片颜色值的方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
PHP获取图片颜色值的方法本例讲述了PHP实现获取图片颜色值的方法，PHP获取图片颜色值检测图片主要颜色是通过imagecreatefromjpeg函数读取图片，再循环获得各个颜色...本例讲述了PHP实现获取图片颜色值的方法，PHP获取图片颜色值...
php 7.3 安装gd最简单的方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php 7.3 安装gd最简单的方式php_install_gd网上都是源码安装依赖，然后php源码安装的步骤，其实没那么复杂，包安装直接搞定：apt-get install php7 3-gd网上都是源码安装依赖，然后php源码安装的步骤，其实没那么复杂，包安装直接搞定...
PHP and MySQL - how to avoid password in source code? [duplicate]
I have a small PHP application storing data in a MySQL database. Currently username / password are hard-coded in the PHP code. A situation I do not really like, for example, since the code is also available in a repository.
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How do I catch an Ajax query post error?
...Since jQuery 1.5 you can use the deferred objects mechanism:
$.post('some.php', {name: 'John'})
.done(function(msg){ })
.fail(function(xhr, status, error) {
// error handling
});
Another way is using .ajax:
$.ajax({
type: "POST",
url: "some.php",
data: "name=John&l...
Detect encoding and make everything UTF-8
...ixing UTF-8 and Latin1 in the same string.
Usage:
require_once('Encoding.php');
use \ForceUTF8\Encoding; // It's namespaced now.
$utf8_string = Encoding::toUTF8($utf8_or_latin1_or_mixed_string);
$latin1_string = Encoding::toLatin1($utf8_or_latin1_or_mixed_string);
Download:
https://github.co...