检查单词是否是子字符串 - php

Question

我想检查给定的字符串是否是另一个字符串的子字符串。例如：

$a = 'Hello World!'; 
$b = 'ell'; 

$ b是$ a的子字符串。任何可以检查这个功能的功能？

Answer 1

试试这个

$a = 'Hello World!'; 
$b = 'ell'; 
if (strpos($a, $b) !== false) { 
    echo true; // In string 
} 

Answer 2

可以使用strpos()函数来检查

<?php 
     if (strpos('Hello World!','ell') !== false) { 
     echo 'contains'; 
    } 
    else echo 'not contains'; 

http://php.net/manual/en/function.strpos.php

Answer 3

$mystring = 'abc'; 
$findme = 'a'; 
$pos = strpos($mystring, $findme); 

if ($pos === false) { 
echo "The string '$findme' was not found in the string '$mystring'"; 
} else { 
echo "The string '$findme' was found in the string '$mystring'"; 
echo " and exists at position $pos"; 
}