(float) function that is the fastest way and the fastest performance to convert a string to a float number.
For example :
echo (float) '154.256'; // output 154.256
echo (float) '154.256dsgaddgvgf'; // output 154.256
echo (float) '154.256fsadfdsfa15'; // output 154.256
echo (float) 'fsdfdsafd154.256'; // output 0
* if you want to get a float from all numeric characters in string you can try following functions :
function getFloatFromString($string) {
return (float) preg_replace('/[^0-9.]/', '', $string);
}
example :
echo getFloatFromString('abcdef152.685'); // output 152.685
echo getFloatFromString('abcdef152.6cs85'); // output 152.685
echo getFloatFromString('abcdef152.685fd'); // output 152.685
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