PHP Convert String into Float Double

Question

I have list of string  size in bytes   I read those from file  Let say one of the string is 2968789218  but when I convert it to float it become 2 00   This is my code so far     string    2968789218    float    float  string     float   floatval  string     the result is same    result 2 00   Anyone   Solved  The problem was actually the encoding  It s fine now when I change the file encoding  D

User · Answer

If the function floatval does not work you can try to make this :

    $string = "2968789218";
    $float = $string * 1.0;
    echo $float;

But for me all the previous answer worked ( try it in http://writecodeonline.com/php/ ) Maybe the problem is on your server ?

User · Answer

Try using    string    2968789218    float    double  string

User · Answer

float   floatval  string    Ref   http   www php net floatval

User · Answer

Surprisingly there is no accepted answer  The issue only exists in 32-bit PHP   From the documentation      If the string does not contain any of the characters       e   or  E  and the numeric value fits into integer type limits  as defined by PHP INT MAX   the string will be evaluated as an integer  In all other cases it will be evaluated as a float    In other words  the  string is first interpreted as INT  which cause overflow  The  string value 2968789218 exceeds the maximum value  PHP INT MAX  of 32-bit PHP  which is 2147483647    then evaluated to float by  float  or floatval      Thus  the solution is    string    2968789218   echo  Original      floatval  string    PHP EOL   string     0    float   floatval  string   echo  Corrected       float   PHP EOL    which outputs   Original  2 00 Corrected  2968789218   To check whether your PHP is 32-bit or 64-bit  you can   echo PHP INT MAX    If your PHP is 64-bit  it will print out 9223372036854775807  otherwise it will print out 2147483647

[php] PHP Convert String into Float/Double

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