How to replace all occurrences of two substrings with str_replace()?

问题

Currently I have this code which replaces any double space with a  .

It works as expected:

<tr class="' . ($counter++ % 2 ? "odd" : "even") . '">
    <td>Garments:</td>
    <td>' . str_replace('  ', '<br /><br />', trim($result['garment_type'] ) ) . '</td>
</tr>

However I want to do another str_replace() on the same line to replace any single spaces with a pipe character |.

I tried duplicating the code but that just creates another TD for me.

Any help would be appreciated.

回答1:

The order of the array does matter otherwise you will get <br|/> instead of   so try:

str_replace(array(' ','||'), array('|','<br /><br />'), trim($result['garment_type'] ));

Something like this:

echo str_replace(array(' ','||'), array('|','<br /><br />'), 'crunchy  bugs are so   tasty man');

Gives you:

crunchy<br /><br />bugs|are|so<br /><br />|tasty|man

Basically you are changing each space first to | then you are changing any that have two beside each other (||) to  .

If you go the other way, you will change two spaces to   and then you are changing single spaces to | and inbetween the   there is a space, so you end up with <br|/>.

EDIT with your code:

'<tr class="' . ($counter++ % 2 ? "odd" : "even") . '">
    <td>Garments:</td>
    <td>' . str_replace(array(' ','||'), array('|','<br /><br />'), trim($result['garment_type'] )) . '</td>
</tr>'

回答2:

You can pass arrays to str_replace

$what[0] = '  ';
$what[1] = ' ';

$with[0] = '<br /><br />';
$with[1] = '|';

str_replace($what, $with, trim($result['garment_type'] ) )

回答3:

To get around the issues with str_replace (space in   being replaced with |) try strtr:

echo strtr(trim($result['garment_type']), array(' '=>'|', '  '=>'<br /><br />'));

来源：https://stackoverflow.com/questions/45577371/how-to-replace-all-occurrences-of-two-substrings-with-str-replace

标签

php

str-replace

spaces