what is the purpose of php left$ function?

php left$ function is a string manipulation function primarily used to extract the leftmost part or first n characters of the string specifed as parameter.

The syntax for this PHP Left$ Function is:

Left ($string, n)

Where $string is any valid string argument and n is the number of characters to be extracted from the start of the string argument. The function will return n leftmost characters from the start of the $string. If $string has fewer than n number of characters then it will return entire $string as output. The most useful application for this PHP Left$function is for extracting substrings from strings. For example, if you have a string that contains multiple words then you can use Left$ to extract just the leftmost word from that string.

It is also useful when you need to extract a common prefix from multiple strings. By making use of a loop, you can parse each string one by one and then use Left$ Function to get only the prefix of each string and add it to an array or variable. This helps in avoiding manual work and makes things much easier by saving time over repetitive operations with strings.

how do i use the php left$ function in my code?

When it comes to programming, PHP's left$ function is an important tool for text manipulation. The left$ function lets you extract a certain number of characters from the beginning of a string. By using this function, you can generate new strings that contain only the portions of the original string that you want.

To use the left$ function in your code, you must first define the variables that contain the complete strings. For example:

$str1 = "Hello World!"; // complete string

$str2 = "Goodbye Cruel World!"; // complete string

Next, you use the left$ function to extract a certain number of characters from each string. For example:

// Extract 6 characters from $str1, starting at position 0

$sub_string1 = left($str1, 6);

// Extract 5 characters from $str2, starting at position 0

$sub_string2 = left($str2, 5);

Now your variables contain sub-strings that are only 6 and 5 characters long respectively:

echo $sub_string1; // Outputs "Hello "

echo $sub_string2; // Outputs "Goodb"