使用 PHP 按长度将字符串拆分为 2 段
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Split string into 2 pieces by length using PHP
提问by Paul
I have a very long string that I want to split into 2 pieces.
我有一个很长的字符串，我想分成两部分。
I ws hoping somebody could help me split the string into 2 separate strings.
我希望有人能帮我把字符串分成 2 个单独的字符串。
I need the first string to be 400 characters long and then the rest in the second string.
我需要第一个字符串的长度为 400 个字符，然后第二个字符串中的其余字符串。
回答by Paul
$first400 = substr($str, 0, 400);
$theRest = substr($str, 400);
You can rename your variables to whatever suits you. Those names are just for explanation. Also if you try this on a string less than 400 characters $theRest will be FALSE
您可以将变量重命名为适合您的任何名称。这些名字只是为了解释。此外，如果您在少于 400 个字符的字符串上尝试此操作，则 $theRest 将是FALSE
回答by hakre
There is a function called str_splitPHP Manualwhich might, well, just split strings:
有一个名为str_splitPHP Manual的函数，它可能只是拆分字符串：
$parts = str_split($string, $split_length = 400);
$partsis an arraywith each part of it being 400 (single-byte) characters at max. As per this question, you can as well assign the first and second part to individual variables (expecting the string being longer than 400 chars):
$parts它的array每个部分最多为 400 个（单字节）字符。根据这个问题，您也可以将第一部分和第二部分分配给各个变量（期望字符串长于 400 个字符）：
list($str_1, $str_2) = str_split(...);
