在PHP中检查一个字符串是否以给定的单词开头

wufei123 发布于 2023-08-21 阅读（1194）

Create a function to check whether a string begins with the specified string or not. The function should return TRUE on success or FALSE on failure.

The following is the syntax −

1	`begnWith(str, begnStr)`

Consider the following parameters in it to check −

str − The string to be tested
begnStr − The text to be searched in the beginning of the specified string.

Example

The following is an example −

Live Demo

<?php
   function begnWith($str, $begnString) {
      $len = strlen($begnString);
      return (substr($str, 0, $len) = = = $begnString);
   }
   if(begnWith("pqrstuvwxyz","p"))
      echo "True! It begins with p!";
   else
      echo "False! It isn't beginning with p!";
?>