示例1: checkInt ▲点赞 7▼ publicstaticfunctioncheckInt($i, $name){if(!Check::isInt($i)) {thrownew\InvalidArgumentException('\''. $name .'\' must be an integer number but was \''. var_export($i,true) .'\''); } } 开发者ID:purchased-at,项目名称:sdk-php,代码行数:6,代码来...
PHP – Check if String is Float To check if string is a floating point number, typecast string to float. Convert this float to string and then check if the given string is equal to this converted string. Typecasting from string to float will return a floating value. If type casting did ...
We will print to the webpage if it contains the character in the string otherwise not. Here's a PHP script to implement this functionality. We will be using strpos() function, which expects two parameter, mpageTU is string to check for any other is the character against which string has...
<?php $number = 123; var_dump(is_numeric($number)); ?>Copy After running this code snippet, you should have the following result. Since we passed in a number, we got back “true“. bool(true) Checking if a Numeric String is a Number For the second example, we will be showing how...
开发者ID:kovkus,项目名称:r-cms,代码行数:62,代码来源:Parser.php 示例3: parse ▲点赞 4▼ /** * Process all {macros} and <tags/>. *@paramstring *@returnstring */publicfunctionparse($s){if(!Strings::checkEncoding($s)) {thrownewParseException('Template is not valid UTF-8 stream.')...
To check if a string is empty or not, we can use the built-in empty() function in PHP. The empty() function returns true if a string is empty; otherwise it returns false. Here is an example: $myString = ""; if (empty($myString)) { echo "string is empty"; }else{ echo "str...
// 👇 PHP 7 str_starts_with() function function str_starts_with(string $string, string $substring): bool { // get the length of the substring $len = strlen($substring); // just return true when substring is an empty string if ($len == 0) { return true; } // return true or...
Theis_string()PHP function is used to check if a type of variable is a string. A string is a data type, such as floating point or integer, but it represents text rather than numbers. A string uses a set of characters that includes spaces and numbers. For instance, an address such as...
function isJSON($string){ return is_string($string) && is_array(json_decode($string, true)) ? true : false; } Method 2 Requires PHP versions 5.3 or more. function isJSON($string){ return is_string($string) && is_array(json_decode($string, true)) && (json_last_error() == JSON...
Follow the steps below to check your PHP version on a Windows system: 1. Open theCommand Prompt or Windows PowerShell. 2. Run the following command to check the PHP version: php -vCopy The command outputs the PHP version installed on your computer. If you get an error thatphp is not ...