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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 ...
23 cze 2009 · There are a number of ways to "convert" an integer to a string in PHP. The traditional computer science way would be to cast the variable as a string: $int = 5; $int_as_string = (string) $int; echo $int . ' is a '. gettype($int) . "\n"; echo $int_as_string . ' is a ' . gettype($int_as_string) . "\n";
PHP Variable Handling Reference. Example Get your own PHP Server. Return the integer value of different variables: <?php. $a = 32; echo intval ($a) . "<br>"; $b = 3.2; echo intval ($b) . "<br>"; $c = "32.5"; echo intval ($c) . "<br>"; $d = array(); echo intval ($d) . "<br>"; $e = array("red", "green", "blue"); echo intval ($e) . "<br>"; ?>
The only way to convert a large float to a string is to use printf('%0.0f',$float); instead of strval($float); (php 5.1.4). // strval() will lose digits around pow(2,45); echo pow(2,50); // 1.1258999068426E+015 echo (string)pow(2,50); // 1.1258999068426E+015 echo strval(pow(2,50)); // 1.1258999068426E+015 // full conversion
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.
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.
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";
