3 ways to delete spaces in the middle of strings in PHP_PHP Tutorial

First method: Use regular expressions

Copy the code The code is as follows:

echo preg_replace('# #', '', 'ab ab');
//Output "abab"
?>

Second: use str_replace() Function

Copy code The code is as follows:

echo str_replace(' ', '', ' ab ab');
//Output "abab'
?>

The third way: use the strtr() function

Copy code The code is as follows:

echo strtr('ab ab', array(' '=>''));
// Output "abab"
?>

The strtr() function is a bit special, essentially:

Copy code The code is as follows:

strtr('ewb', 'web', '123') ==
strtr('ewb', array('e '=> ' 2', 'w' => '1', 'b' => '3')) ==
str_replace(array('e', 'w', 'b'), array('2 ', '1', '3'), 'ewb');
?>

Fourth method: Use encapsulation function

Copy the code The code is as follows:

function trimall ($str)//Delete spaces
{
$qian=array(" ","　","t","n","r");
$hou=array("", "","","","");
return str_replace($qian,$hou,$str);
}

http://www.bkjia.com/PHPjc/739776.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/739776.htmlTechArticleThe first one: Use regular expression to copy the code. The code is as follows: ?php echo preg_replace('# #', '', 'ab ab'); //Output "abab" ? Second: Use the str_replace() function to copy the code. The code is as follows: ?...