在 Laravel PHP 中获取子字符串
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Get a substring in Laravel PHP
提问by Anna Jeanine
I am currently trying to implement and edit form in my application where the default values are the ones from the item which need to be adjusted. My database encrypts some values and adjusted them before storing. What I need is to get the substring of 5 digits between the ://and .characters of the decrypted value. My form is formatted as:
我目前正在尝试在我的应用程序中实现和编辑表单，其中默认值是需要调整的项目中的值。我的数据库加密了一些值并在存储之前对其进行了调整。我需要的是获取解密值的://和.字符之间的 5 位子串。我的表格格式为：
{!! Form::hidden('id', Lang::get('token.id')); !!}
{!! Form::text('id', Crypt::decrypt($token->url), ['class' => 'form-control', 'maxlength' => 5, 'placeholder' => Lang::get('token.id_placeholder')]); !!}
Could someone help me get the substring of 5 digits between ://and .from the decrypted value to use as a default value in my form?
可能有人帮助我得到的之间的5位数字的字符串://，并.从解密的值作为我的表单的默认值使用？
回答by Lucas Franco
you can do it this way:
你可以这样做：
<?php
$a = 'https://12345.test.com';
$digits = substr($a, strpos($a, '://') + 3, 5);
Hope it works.
希望它有效。
Edit:was missing part of the code
编辑：缺少部分代码
