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PHP converts the first character in a string to uppercase using the function ucfirst()

黄舟Original: 2017-11-06 13:54:531620browse

Example

Convert the first character of "hello" to uppercase:

<?php
echo ucfirst("hello world!");
?>

Definition and usage

ucfirst() function converts the first character in the string to capital.

Related functions:

lcfirst() - Convert the first character in the string to lowercase
ucwords() - Convert the first character of each word in the string to uppercase
##strtoupper() - Convert the string to uppercase
strtolower( ) - Convert the string to lowercase

Syntax

ucfirst(string)

##ParametersstringTechnical details

Description
Required. Specifies the string to be converted.

Return value: PHP version: This function demonstrates how to add the first string to the string using the ucfirst function. Characters converted to uppercase

Returns the converted string.
4+

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <title> ucfirst.php </title>
  <meta charset="UTF-8">
  <meta name="Author" content="">
  <meta name="Keywords" content="">
  <meta name="Description" content="">
 </head>
 <body>
<?php
//原来首字符小写
$foo = &#39;hello world!&#39;;
$foo2 = ucfirst($foo); //输出 Hello world!
echo $foo . "<br>";
echo $foo2 . "<br>";
//首字符大写，则不改变
$bar = &#39;HELLO WORLD!&#39;;
$bar = ucfirst($bar); //输出 HELLO WORLD!
echo $bar . "<br>";
//将所有字符变成小写后，再将首字符编程大写
$bar = ucfirst(strtolower($bar)); //输出 Hello world!
echo $bar . "<br>";
?>
 </body>
</html>
hello world!
Hello world!
HELLO WORLD!
Hello world!

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PHP converts the first character in a string to uppercase using the function ucfirst()

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