php中幾個字元函數小結

  下面小結PHP中的幾個字元函數，小結一下： 

1）ucfirst 
   將首字母變大寫，例如 
  $string = "this is my web development blog";
// Output: This is my web development blog 

2) lcfirst,將首字母變小寫 
   $string = "This is my Web Development Blog"; 
:
echoin88(); this is my Web Development Blog 

3）strtoupper,將整個字串變大寫 
   $string = "this is my web development blog"; 

echo strtoupper($string); DEVELOPMENT BLOG 

4） strtoplower，將整個字串變小寫 
   $string = "tHiS is mY WeB DevElOpMenT bLoG"; 

echo strtolower($string);

5）ucwords(),可以把句子中每個字的第一個字母變大寫，例如 
   $string = "this is my web development blog"; 

echo ucwords($string); 


echo ucwords($string); 

// Output: This Is My Web Development Blog