Let’s talk about the str_starts_with() function in PHP8

In the previous article "Why is the === operator in PHP faster than ==? 》Introduced to you why the === operator in PHP is faster than ==. Interested friends can read and learn about it~

This article will take you to talk about the === operator in PHP8 str_starts_with()Function.

str_starts_with() is a predefined function in PHP 8 that performs a case-sensitive search on a given string. str_starts_with() usually checks whether the string starts with a substring. str_starts_with() will return TRUE if the string starts with a substring, otherwise it will return FALSE.

str_starts_with() syntax is:

str_starts_with($string, $substring)

$string: This parameter refers to the string that needs to check the starting string.

$substring: This parameter refers to the string that needs to be checked.

Return value: If the string starts with a substring, str_starts_with() will return TRUE otherwise it will return FALSE.

str_starts_with() Main features:

• str_starts_with() is essentially case-sensitive.

• str_starts_with() always returns a Boolean value.

• str_starts_with() can be used to check the beginning of characters and strings.

• Versions smaller than PHP8 do not support str_starts_with().

The following uses 2 examples to introduce the use of this function:

Example 1:

<?php

	$name = &#39;Saurabh Singh&#39;;
	$beginsWith = &#39;S&#39;;

	$result = str_starts_with($name, $beginsWith) ? &#39;is&#39; : &#39;is not&#39;;

	echo "字符串 \"$name\" $result 以 $beginsWith 开头";

?>

Output ：

字符串 "Saurabh Singh" 以 S 开头

In the above example we created three variables: $name to store the name of the string type, $begininswith to store the substring that needs to be checked with $name, $result to store the calculation based on str_starts_with() the result of the expression. str_starts_with() will return TRUE if the string $name begins with the substring $begininswith, otherwise it will return FALSE and assign the value of $result accordingly.

Example 2:

<?php

	$sentance = &#39;The Big Brown Fox&#39;;
	$beginsWith = &#39;The&#39;;

	if(str_starts_with($sentance , $beginsWith) )
	{
	echo "字符串 \"$sentance\" 以 \"$beginsWith\" 开头";
	}
	else
	{
	echo "字符串 \"$sentance\" 不以 \"$beginsWith\" 开头";
	}	

?>

Output:

字符串 "The Big Brown Fox" 以 "The" 开头

In example 1 , we search using the beginning characters of the sentence. In this example, we are taking the complete word at the beginning of a sentence, which will also return TRUE in the if condition, and then the conditional part will be executed accordingly.

Finally, I would like to recommend the latest and most comprehensive "PHP Video Tutorial"~ Come and learn!

The above is the detailed content of Let’s talk about the str_starts_with() function in PHP8. For more information, please follow other related articles on the PHP Chinese website!