PHP 检查字符串中的子串

要检查字符串中的子串，PHP 中的代码如下所示 −

案例

 在线演示

<?php
   $subStr = "Mother";
   $str = "How I Met Your Mother";
   echo "String = $str";
   echo "
Substring = $subStr";
   if(strpos($str, $subStr) !== false){
      echo "
Substring found successfully";
   } else{
      echo "
Substring not found";
   }
?>

输出

这将产生以下输出−

String = How I Met Your Mother
Substring = Mother
Substring found successfully

案例

现在让我们看另一个示例 −

 在线演示

<?php
   $subStr = "Ocean";
   $str = "In the Heart of Sea";
   echo "String = $str";
   echo "
Substring = $subStr";
   if(strpos($str, $subStr) !== false){
      echo "
Substring found successfully";
   } else{
      echo "
Substring not found";
   }
?>

输出

这将产生以下输出−

String = In the Heart of Sea
Substring = Ocean
Substring not found

更新日期：24-12-2019

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