Commonly used string processing functions in php_PHP tutorial

Only a few simple and commonly used functions are provided below. Chop performs space removal processing, get_html_translation_table returns the conversion list to variables, defines htmlentities including HTML-encoded strings, htmlspecialchars_decode defines strings containing HTML special characters, nl2br quotemeta rtrim, etc. ​

Only a few simple and commonly used functions are provided below. Chop performs space removal processing, get_html_translation_table returns the conversion list to variables, defines htmlentities including html-encoded strings, htmlspecialchars_decode defines strings containing html special characters, nl2br quotemeta rtrim, etc.
Definition and Usage
The chop() function removes whitespace characters or other predefined characters starting from the end of a string.

An alias for the rtrim() function of this function.

Grammar

chop(string,charlist)

*/
$str="i'm a teacher "; //Define string
$result=chop($str); //Execute space removal processing
return

/*/

Definition and usage

The get_html_translation_table() function returns the translation table used by the htmlentities() and htmlspecialchars() functions.

Grammar

get_html_translation_table(function,quotestyle)

/*/

$trans=get_html_translation_table(html_entities); //Return the conversion list to the variable
print_r($trans); //Output conversion table
$str="hallo &
& krmer"; //Define string $encoded=strtr($str,$trans); //Search for character
echo $encoded; //Output result
//

$str="a 'quote' is

bold"; //Define a string including html encoding echo htmlentities($str); //Output the processed string
echo htmlentities($str, ent_quotes); //Output result after adding optional parameters

//

$str='

this -> "

';           //Define a string containing html special characters

echo htmlspecialchars_decode($str); //Output the converted content
echo "
";
echo htmlspecialchars_decode($str,ent_noquotes); //Output result without encoding quotes

//

$str="cat isn't n dog"; //Define a string containing a newline character

$result=nl2br($str); //Perform conversion operation
echo $result; //Output the converted result

//

$str="hello world.(can you hear me?)"; //Define a string containing metacharacters

$result=quotemeta($str); //Perform conversion operation
echo $result; //Output the converted result

//

$str="hello world "; //Define a string with spaces at the end

$result=rtrim($str); //Perform conversion operation
echo $result; //Output the converted result
?>

http://www.bkjia.com/PHPjc/445386.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445386.htmlTechArticleOnly a few simple and commonly used functions are provided below. Chop performs space removal processing, and get_html_translation_table returns the conversion list to variables. Definition Contains HTML-encoded string htmlentities, ...