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27 gru 2011 · Integer size can be determined using the constant PHP_INT_SIZE, and maximum value using the constant PHP_INT_MAX since PHP 4.4.0 and PHP 5.0.5. If PHP encounters a number beyond the bounds of the integer type, it will be interpreted as a float instead.
16 gru 2011 · If you want the numerical value of a string and you don't want to convert it to float/int because you're not sure, this trick will convert it to the proper type: function get_numeric($val) { if (is_numeric($val)) { return $val + 0; } return 0; } Example: <?php get_numeric('3'); // int(3) get_numeric('1.2'); // float(1.2) get_numeric('3.0 ...
PHP Built-in Functions. PHP has over 1000 built-in functions that can be called directly, from within a script, to perform a specific task. Please check out our PHP reference for a complete overview of the PHP built-in functions.
A helper class to convert integer to binary strings and vice versa. Useful for writing and reading integers to / from files or sockets. <?php class int_helper {public static function int8 ($i) {return is_int ($i) ? pack ("c", $i) : unpack ("c", $i)[1];} public static function uInt8 ($i) {return is_int ($i) ? pack ("C", $i) : unpack ("C", $i)[1];}
intval (mixed $value, int $base = 10): int. Returns the int value of value, using the specified base for the conversion (the default is base 10). intval () should not be used on objects, as doing so will emit an E_WARNING level error and return 1.
If you want to convert a string automatically to float or integer (e.g. "0.234" to float and "123" to int), simply add 0 to the string - PHP will do the rest. e.g. $val = 0 + "1.234";
31 lip 2024 · The filter_var() function in PHP can be used to convert a string to a number by using the FILTER_SANITIZE_NUMBER_FLOAT or FILTER_SANITIZE_NUMBER_INT filter. This function is versatile and can handle various types of sanitization and validation.
