如何在php中切片字符串

代码示例

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0

substr()php


<?php
echo substr('abcdef', 1);     // bcdef
echo substr('abcdef', 1, 3);  // bcd
echo substr('abcdef', 0, 4);  // abcd
echo substr('abcdef', 0, 8);  // abcdef
echo substr('abcdef', -1, 1); // f

// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0];                 // a
echo $string[3];                 // d
echo $string[strlen($string)-1]; // f

?>

//substr() function returns certain bits of a string 
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php获取字符串的前5个字符

$result = substr("Hello How are you", 0, 5); //first 5 chars "Hello"
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取后四位数字

$newstring = substr($dynamicstring, -7);
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php限制字符串长度

if (strlen($str) > 10)
   $str = substr($str, 0, 7) . '...';

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