如何在 PHP 中的每个数组对象中删除空格后的所有内容？

Question

我有两个数组，每个数组对象都包含字母和数字。例如：“马修 20897”。我想从每个数组对象中删除数字，以便我可以比较两个数组并查看它们是否有任何共同的单词/名称。我尝试做一个爆炸来摆脱空间，但我得到一个错误，说爆炸（）期望参数 2 是一个字符串。

下面是我目前的代码：

<?php
//simple read file and print
$boy = array();
$girl = array();
$connectionBoy = fopen("boynames.txt", "r") or die("Can't open boynames.txt file.");
$connectionGirl = fopen("girlnames.txt", "r") or die("Can't open girlnames.txt file.");

while(! feof($connectionBoy)){   //while it is not the end of the file
    
    $word = fgets($connectionBoy);  //read a record
    $word = rtrim($word); //gets rid of end of record char
    $boy[] = $word;
}

while(! feof($connectionGirl)){   //while it is not the end of the file
    
    $word2 = fgets($connectionGirl);  //read a record
    $word2 = rtrim($word2); //gets rid of end of record char
    $girl[] = $word2;
}

fclose($connectionBoy);
 echo "Number of names in the boynames file are ".sizeof($boy)."<br>";
 echo "Number of names in the boynames file are ".sizeof($girl);
 
 $itemBoy = explode(" ",$boy);
 $itemGirl = explode(" ",$girl);
 
 $result =array_intersect($itemBoy,$itemGirl);
 print_r($result);

另外，两个数组都存储了 1000 条记录，所以我必须删除两个数组中所有项目的空格之后的所有内容。

Answer 1

使用 rtrim()。 echo rtrim(' Removendo Espaços ');

https://www.php.net/manual/pt_BR/function.rtrim.php http://www.mauricioprogramador.com.br/posts/remover-espacos-php-trim-ltrim-e-rtrim

Answer 2

来自docs：

explode — 用一个字符串分割一个字符串

explode 获取一个字符串并将其拆分为一个数组。 $boy 和 $girl 已经是数组了。

如果我理解您要做什么，您可以通过以下方式摆脱循环中的数字：

$splitWord2 = explode(' ', $word2);
$girl[] = $splitWord2[0];

Answer 3

从您的代码中，我看到您在错误的地方使用了explode 函数。它应该在while loop 中，因为字符串应该在那里展开以获得名称的第一个单词。我已经更新了你的代码。

<?php

$boy = array();
$girl = array();
$connectionBoy = fopen("boynames.txt", "r") or die("Can't open boynames.txt file.");
$connectionGirl = fopen("girlnames.txt", "r") or die("Can't open girlnames.txt file.");

while(! feof($connectionBoy)){   //while it is not the end of the file
    
    $line = fgets($connectionBoy);  //read a record
    $line = trim($line); //gets rid of end of record char
    $parts = explode(" ",$line);
    $boy[] = $parts[0];
}

while(! feof($connectionGirl)){   //while it is not the end of the file
    
    $line = fgets($connectionGirl);  //read a record
    $line = trim($line); //gets rid of end of record char
    $parts = explode(" ",$line);
    $girl[] = $parts[0];
}

fclose($connectionBoy);
fclose($connectionGirl);

echo "Number of names in the boynames file are ".sizeof($boy)."<br>";
echo "Number of names in the boynames file are ".sizeof($girl);

$result =array_intersect($boy,$girl);
print_r($result);

?>