Strings in PHP can be converted to numbers (float / int / double) very easily. In most use cases, it won’t be required since PHP does implicit type conversion. There are many methods to convert string into number in PHP some of them are discussed below:
Method 1: Using number_format() Function. The number_format() function is used to convert string into a number. It returns the formatted number on success otherwise it gives E_WARNING on failure.
Method 2: Using type casting: Typecasting can directly convert a string into float, double or integer primitive type. This is the best way to convert a string into number without any function.
1000 1000.314 1000.314
Method 4: By adding 0 or by performing mathematical operations. The string number can also be converted into an integer or float by adding 0 with the string. In PHP, performing mathematical operations, the string is converted to an integer or float implicitly.
1000.314 1000.314 1000.414