PHP检测字符串是以字母还是数字开头[重复]

Question

This question already has an answer here:

• First letter is number in string 5 answers

I am sorting out data from my database using PHP and needed to know if the string(varchar) value starts with a letter or a number, so i am writing a function to check this.

Below is my code, I got the first letter of the string and now my next step is to identify if its a Letter or a number,can PHP achieve this? any suggestions would be great thanks!

function StartWith($str) {

     return  $str[0];

}

echo StartWith('AdamSavior');

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Answer 1

To be more simple:

function StartWith($str)
{
    return is_numeric($str[0]) ? 'Number' : 'Letter';
}

echo StartWith('AdamSavior');

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Since your task is in database, would be good if it is done with query