Then we create the ‘first_char’ variable by accessing the element at index 0 of the array, which is assigned to the variable $first_char. So, the variable $chars will now contain an array of characters. In this case, str_split() function is used to split the string ‘$string’ into an array of individual characters. Then we create another variable called ‘chars’. We have created the variable ‘ string‘ and initialized it to the string value ‘Hello, world!’. In this method, we use the str_split() to split the string into an array of characters and then access the first element $string = "Hello, world!" Finally, $first_char now contains the first character ‘F’ of the string variable ‘str’. And finally, we pass the third argument as ‘ 1′, because the length of the first character is ‘1’. We passed the first argument as variable ‘ str‘, the second argument as ‘ 0‘, because we are finding the first character of the string so the first character of every string is at index ‘0’. Then we used substr() function to extract a portion of this string, specifically the first character of the string. The first character is ‘F’, so we find the first character using substr() function. In this code, we have assigned the variable ‘str’ to the value “Freedom”. We should pass three parameters to the substr() function: the string to be manipulated, the starting index from which the substring should be extracted (in this case, 0), and the length of the substring to be extracted (in this case, 1). READ ALSO Logical Operators in PHP | Explained 2. Finally, $first_char now contains the first character ‘J’ of the string variable ‘str’. The number 0 inside the square brackets indicates that we want to access the first character in the string. And initialized to variable ‘str’ and pass the index value ‘ 0‘ inside the square bracket. Then we create another variable ‘ first_char‘ for storing the first character of the ‘ str‘ variable. 
We have created the variable ‘str’ and initialized it to the string value ‘JOHN’. 
The square brackets,, are used to access individual characters in the string based on their position or index.
In this method, we can get first character of string by using square brackets notation and setting the index ‘0’. 3 Ways to get the first character of string 1. Overall, finding the first character of the string is a useful operation that can be used in many different scenarios. For example, you may want to extract the first word of a sentence, which can be done by getting the substring from the start of the string up to the first space character. Substring manipulation: You may need to manipulate a substring that starts at the first character of a string.For example, you may want to capitalize the first letter of a name. Formatting: If you are working with text data, you may want to format the first character of a string in a particular way.Validation: If you’re expecting a certain type of input in your PHP script, you can check if your expectation matches by finding the first character of a string.
Here are a few reasons why you might want to do this: Why do we need to get the first character of the string in php?
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