我下面有一个示例字符串，并希望删除任何单个字符，因此以下内容：
$string = 'N W N W Some useful test what I would like to keep'
可以变成：$stringNew = 'Some useful test what I would like to keep'
我也想要一个通用的解决方案，因为上面的字符串会有所不同，字符串中的独立字母也会有所不同。非常感谢任何帮助。
使用 preg_replace() 来执行此操作。使用以下代码
<?php
$string = 'N W N W Some useful test what I would like to keep'
echo preg_replace('/'b'w'b's?/', '', $string); // will print Some useful test what would like to keep
?>
如果你不希望我被替换，那么请使用这个代码
<?php
$string = "N W N W Some useful test what I would like to keep";
$array = explode(" ",$string);
$new = "";
foreach($array as $p){
if($p=="I"){
echo " ".$p;
}
else{
if(strlen($p)!==1){
echo " ".$p;
}
}
}
echo trim($new); // will print Some useful test what I would like to keep
?>
希望这对你有帮助