Check if input is a number in PHP 7.1.x

Post author By Shiva Charan Devabhaktuni
Post date October 14, 2017

is_int()

The is_int() doesn’t tell you if the string is actually a number, instead it returns false.

If you convert your string numeric into an int and then do this, only then will it work. But there is a problem with this approach, while converting string to an int, we use intval(). This converts strings to 0's.

is_numeric()

So the best way to find out whether a variable is an actual numeric or not is to use this php function.

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