New string methods in PHP8.0: str_starts_with and str_ends_with

New string methods in PHP8.0: str_starts_with and str_ends_with

PHP8.0 is the latest version of the PHP programming language, which brings many exciting new features and improvements. Among them, str_starts_with() and str_ends_with() are two very useful string methods. This article will introduce you to their functions, usage and examples.

str_starts_with() method

str_starts_with() method is used to check whether a string starts with the specified substring, if so, it returns true, otherwise it returns false.

This is the syntax of the str_starts_with() method:

bool str_starts_with ( string $haystack , string $needle )

Among them, the $haystack parameter is the string to be checked, $needle is the substring to be checked.

Here are some examples of the str_starts_with() method:

Example 1

To check if a string starts with the substring "Hello":

$myString = "Hello World";
if (str_starts_with($myString, "Hello")) {

echo "字符串以 Hello 开头。";

} else {

echo "字符串不以 Hello 开头。";

}

// Output: "The string starts with Hello."

Example 2

To check whether the string starts with the number "123":

$myString = "123ABC";
if (str_starts_with($myString, "123")) {

echo "字符串以 123 开头。";

} else {

echo "字符串不以 123 开头。";

}

// Output: "String starts with 123." "

str_ends_with() method

str_ends_with() method is used to check whether a string ends with the specified substring. If so, it returns true, otherwise it returns false.

This is the syntax of the str_ends_with() method:

bool str_ends_with (string $haystack, string $needle)

Among them, the $haystack parameter is the string to be checked, $needle is the substring to be checked.

Here are some examples of the str_ends_with() method:

Example 1

To check if a string ends with the substring "World":

$myString = "Hello World";
if (str_ends_with($myString, "World")) {

echo "字符串以 World 结尾。";

} else {

echo "字符串不以 World 结尾。";

}

// Output: "String ends with World."

Example 2

To check whether the string ends with the substring "789":

$myString = "ABC789" ;
if (str_ends_with($myString, "789")) {

echo "字符串以 789 结尾。";

} else {

echo "字符串不以 789 结尾。";

}

// Output: "String with 789 End."

Conclusion

The str_starts_with() and str_ends_with() methods are very useful string methods in PHP8.0. They allow developers to more conveniently check the beginning and end of a string. ending, thereby improving code readability and performance.

If you are using PHP8.0 or higher, it is strongly recommended that you learn these two methods and use them in your development projects.

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