I have following text:
Ankylosaurus was an armored dinosaur that lived roughly 67 million years ago, at the very end of the Cretaceous Period. This genus was among the last of the non-avian dinosaurs, living alongside Tyrannosaurus, Triceratops, and Edmontosaurus. Its name means ‘fused lizard’; bones in its skull and other parts of its body were fused, increasing their strength. Ankylosaurus was up to 6.25 m (20.5 feet) long and 1.7 m (5.6 feet) tall, weighing about 4.8–8 tonnes (11,000–18,000 lb). It had a broad, robust body with a wide, low skull. The front parts of the jaws were covered in a beak, with rows of small, leaf-shaped teeth behind it, adapted for a herbivorous diet. It was covered in armor plates for protection against predators, with bony half-rings covering the neck, and had a large club on the end of its tail which may have been used as a weapon. Fossils from a few specimens of Ankylosaurus have been found in various geological formations in western North America, but a complete skeleton has
Now I run bellow PHP and JS code:
echo strlen(trim($text));
and
var text = "above text"; alert( text.length);
Now PHP is showing 1004 and JS is showing me 1000 characters, Why?
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Answer
It’s because you are using not the normal dash within following lines 4.8–8 tonnes (11,000–18,000 lb). This character uses 3 bytes (you used it twice, so it’s 6 instead of 2 length).
To prevent that you can use mb_strlen($string) or change the –, with an -.
I would recommend using the mb_ variant, so you are not only safe for the future, but also don’t remove possible Typo`s (if this “dash” is actually the correct dash.. there are so many https://typefacts.com will help you a lot if this is in your interest).