Online PHP editor | rfc for gFHWe

@ 2013-03-31T17:19:54Z

<?php

function cn_substrr($str,$slen,$startdd=0) 
{ 
$str = cn_substr(stripslashes($str),$slen,$startdd); 
return addslashes($str); 
} 
function cn_substr($str,$slen,$startdd=0) 
{ 
global $cfg_soft_lang; 
if($cfg_soft_lang=='utf-8') 
{ 
return cn_substr_utf8($str,$slen,$startdd); 
} 
$restr = ''; 
$c = ''; 
$str_len = strlen($str); 
if($str_len < $startdd+1) 
{ 
return ''; 
} 
if($str_len < $startdd + $slen || $slen==0) 
{ 
$slen = $str_len - $startdd; 
} 
$enddd = $startdd + $slen - 1; 
for($i=0;$i<$str_len;$i++) 
{ 
if($startdd==0) 
{ 
$restr .= $c; 
} 
else if($i > $startdd) 
{ 
$restr .= $c; 
} 
if(ord($str[$i])>0x80) 
{ 
if($str_len>$i+1) 
{ 
$c = $str[$i].$str[$i+1]; 
} 
$i++; 
} 
else 
{ 
$c = $str[$i]; 
} 
if($i >= $enddd) 
{ 
if(strlen($restr)+strlen($c)>$slen) 
{ 
break; 
} 
else 
{ 
$restr .= $c; 
break; 
} 
} 
} 
return $restr; 
} 




$a = '测试这是一个测试';
//$a = 'xxxxbbbbbnnn';

$b = cn_substrr($a,5,0);
var_dump($b);

?>

Output for git.master, git.master_jit, rfc.property-hooks: string(4) "测�"

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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