![[PHP class] use PHP to convert JPEG and PNG to WebP-Small Seven Notes](https://www.snswm.com/wp-content/uploads/2024/07/d2b5ca33bd20240701222148-800x444.png)
[PHP Class] Convert JPEG and PNG to WebP using PHP
This library allows you to perform webp conversions with PHP. It supports a large number of conversion methods and automatically selects the most capable method available on your system. Installation The Composer library is required as follows: composer require rosell-dk/webp-convert Converts images...
5 Ways PHP Determines Whether or Not It's Null
1. isset function: to determine whether the variable is initialized Description: it does not determine whether the variable is empty, it can be used to determine whether the elements of the array have been defined. Note: When using isset to determine whether an array element has been initialized, it is more efficient than array_key_exists ...
PHP checks if the number is a plain number
The first: directly use a function, is_numeric() This function is to detect whether the parameter is a number, if so, return true, if not, return false, for example: is\_numeric( 'abcd123' ) ordie('the provided parameter is not a number'); The second ...
Codec conversion of string character sets
String codec conversion including: utf8 to gbk, Simplified Chinese to Traditional Chinese, unicode to utf8, Ascii to Pinyin, Unicode decoding, etc.
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PHP common string processing methods
1, realize the search engine to search results hit the keyword marked red <?php /** * Split the string into an array * @param $search search keyword * @return array */ function splitString(string $search):array { // positive ...
PHP common methods to manipulate directories or files
1, convert \ to / /** * Convert \ to / * * * @param string $path path * @return string path */ function dir_path($path) { $path = str_replace('\\', '/', $path); if(substr($path, -1) ! = '/'...
php session vs cookie
1, set session /** * set session * @param String $name session name * @param Mixed $data session data * @param Int $expire timeout(sec) */ function set _session($name, $data, $expir...
PHP CURL operations
The CURL class implements a wrapper around the PHP Curl extension, using instances of this class to enable remote access. To use this module you need to enable the Curl extension. 1, initiate get request function get_url($url) { $ch = curl_init(); $header[] = ''; curl_setop...
PHP Date, Time, Byte Conversion
1, convert bytes to other units (Gb, Mb, etc.) 2, time conversion (convert seconds to time) /** * Function dataformat * Time conversion (convert seconds to time) * @param $n INT time */ function dataformat($n) { $hours = f ...
PHP DateTime common methods
Instantiation of an object preceded by \ means that the native class is used in the namespace, if the namespace is not used, you can remove the preceding \ 1. Output the current time $datetime = new \DateTime; print_r($datetime->format('Y-m-d H:i...
PHP string encryption and decryption functions
1, simple string encryption, decryption function /** * String encryption, decryption function * * * @param string $txt String * @param string $operation ENCODE for encryption, DECODE for decryption, optional parameter, default is ENCODE, * @param st...