A continues series of characters in a string how do I split it at a certain point e.g 30 charaacters in php

I'm trying to break/split a continues series of characters in a php string at a specific point e.g.

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

to

AAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAA开发者_开发技巧

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PHP has a function called chunk_split() which does exactly what you ask...

$myLongString = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA';

$splitString = chunk_split($myLongString, 20);

echo $splitString;

/*

AAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAA

*/

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I would use wordwrap() with the $break parameter as " ".

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Just take a look at substr function here..

eg:

substr('foobar', 0, 3). ' ';

yields

'foo '