$string = “This is a test string”; $substring = “test”; if (strpos($string, $substring) !== false) { echo “The string contains the substring.”; } else { echo “The string does not contain the substring.”;
if(stristr($string, $substring)){ echo 'Our string contains: ' . $substring; } In the PHP code above, we were able to confirm that our string contains the substring “this”. As you can see, thestristrfunction takes in two parameters: $haystack: This is the string that we want to ...
How to check if a string contains substring in PHP? 1) strpos() function: 2) strstr() function: 3) stristr() function: 4) preg_match() function: Introduction A string is a sequence of characters used as a literal constant or variable. The specific part of a string is known as a su...
Discover multiple methods for checking if a substring exists within a PHP string. Explore efficient techniques for substring detection now!
int strrpos ( string $haystack , string $needle [, int $offset = 0 ] ) 返回字符串 haystack 中needle 最后一次出现的数字位置。注意 PHP4 中,needle 只能为单个字符。如果 needle 被指定为一个字符串,那么将仅使用第一个字符。 参数 haystack 在此字符串中进行查找。 needle 如果needle不是一个字符...
How do I check if a string contains a specific word? 考虑: 1 2 3 4 $a='How are you?'; if($acontains'are') echo'true'; 假设我有上面的代码,那么正确地编写语句if ($a contains 'are')的方法是什么? 您可以使用strpos()函数来查找一个字符串在另一个字符串中的出现: ...
If anyone is in need, here is a simple function to chop string without chopping the word and leaving the sentence incomplete. This function chops the desired length of string and after that finds the last white space in the chopped string. After that it again chops the string to the positi...
function custom_json_encode($data) { if (is_string($data)) { return '"' . addslashes($data) . '"'; } elseif (is_array($data)) { $result = []; foreach ($data as $key => $value) { $result[$key] = custom_json_encode($value); } return '{' . implode(',', $r...
Here, we are playing with a string with different functions: Function Description strlen returns the number of characters that the string contains. trim returns the string, removing all the blank spaces to the left and to the right. strtoupper and strtolower return the string with all the ...
此函数返回由字符串组成的 array,每个元素都是 string 的一个子串,它们被字符串 delimiter 作为边界点分割出来。 If delimiter is an empty string (""), explode() will return FALSE. If delimiter contains a value that is not contained in string and a negative limit is used, then an empty array ...