php str starts with

1//php check if first four characters of a string = http
2substr( $http, 0, 4 ) === "http";
3//php check if first five characters of a string = https
4substr( $https, 0, 5 ) === "https";
5

1function stringStartsWith($haystack,$needle,$case=true) {
2    if ($case){
3        return strpos($haystack, $needle, 0) === 0;
4    }
5    return stripos($haystack, $needle, 0) === 0;
6}
7
8function stringEndsWith($haystack,$needle,$case=true) {
9    $expectedPosition = strlen($haystack) - strlen($needle);
10    if ($case){
11        return strrpos($haystack, $needle, 0) === $expectedPosition;
12    }
13    return strripos($haystack, $needle, 0) === $expectedPosition;
14}
15echo stringStartsWith("Hello World","Hell"); // true
16echo stringEndsWith("Hello World","World"); // true

1substr($string, 0, strlen($query)) === $query
2

1phpCopy<?php
2  $string = "mr. Peter";
3  if(strncasecmp($string, "Mr.", 3) === 0){
4      echo "The string starts with the desired substring.";
5  }else 
6      echo "The string does not start with the desired substring.";
7?>
8