function isJSON($string){ return is_string($string) && is_array(json_decode($string, true)) && (json_last_error() == JSON_ERROR_NONE) ? true : false; } Method 2 does 3 checks for calculating if the string given to it is JSON. So, it is the most perfect one, but it’s slow...
<?php function isJson(string $value): bool { try { json_decode($value, true, 512, JSON_THROW_ON_ERROR); } catch (JsonException) { return false; } return true; } echo isJson('{"name":"John"}') ? 'Yes' : 'No'; echo isJson('{0,1,3}') ? 'Yes' : 'No';Next...
// false // checks if string is a valid url (also works with umlauts and without external lib like idna) __validate_url('https://vielhuber.de') // true // check if string is a valid email (also works with umlauts and without external lib like idna) __validate_email...
方法二:使用mb_check_encoding()函数 “`php $string = “测试字符串”; $encoding = “UTF-8”; // 假设字符串的编码是UTF-8 if(mb_check_encoding($string, $encoding)){ echo “字符串编码正确”; } else { echo “字符串编码错误”; } “` 该函数用于检测字符串是否符合指定的编码。如果字符串...
SoapClient{/* 方法 */public__construct(string|null$wsdl,array $options=[])public__call(string $name,array $args):mixedpublic__doRequest(string $request,string $location,string $action,int $version,bool $oneWay=false):string|nullpublic__getCookies():arraypublic__getFunctions():array|nullpublic...
Check if string is URL 🚀See examples👀 Install the latest version withComposer: composer require vstelmakh/url-highlight Also, there areTwig extensionandSymfony bundleavailable. Quick start <?phprequire__DIR__.'/vendor/autoload.php';useVStelmakh\UrlHighlight\UrlHighlight;$urlHighlight=newUrl...
在ZipArchive 中存在 open 方法, 参数为 (string $filename, int $flags=0), 第一个为文件名, 第二个为打开的模式, 有以下几种模式ZipArchive::OVERWRITE 总是以一个新的压缩包开始,此模式下如果已经存在则会被覆盖或删除 ZipArchive::CREATE 如果不存在则创建一个zip压缩包 ZipArchive::RDONLY 只读模式...
1//文件路径:\Zend\zend_variables.c2ZEND_APIvoidZEND_FASTCALL_zval_dtor_func(zend_refcounted*pZEND_FILE_LINE_DC)3{4switch(GC_TYPE(p)){5caseIS_STRING:6caseIS_CONSTANT:{7zend_string*str=(zend_string*)p;8CHECK_ZVAL_STRING_REL(str);9zend_string_free(str);10break;11}12caseIS_ARRAY:{13...
if(!ctype_alnum($str)){ echo '只能是字母或数字的组合';exit; } 整理下ctype functions: 1.ctype_alnum(string $text)://检查是否是字母或数字或字母数字的 组合 2.ctype_alpha(string $text):check for alphabetic character(s) //检查字符串是否是字母 ...
string.rot13 ,执行一些 BC 加密 convert.iconv.X.Y ,将字符集从 X 转换为 Y 让我们看一下最后一个过滤器: convert.iconv.X.Y 。假设我需要将文件从 UTF8 转换为 UTF16。我可以用: php://filter/convert.iconv.UTF-8.UTF-16/resource=/etc/passwd ...