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<?php
function foo ()
{
return 5;
}
?>
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锟斤拷然锟斤拷PHP 锟叫碉拷值锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵的★拷PHP 支锟斤拷锟斤拷锟街憋拷锟斤拷值锟斤拷锟斤拷锟斤拷值锟斤拷锟杰诧拷锟轿拷锟叫★拷牡锟皆拷锟斤拷锟斤拷锟斤拷锟斤拷锟介不同锟斤拷锟斤拷锟酵o拷锟斤拷锟斤拷值锟斤拷integer锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷值锟斤拷float锟斤拷锟斤拷锟街凤拷锟斤拷值锟斤拷string锟斤拷锟酵诧拷锟斤拷值锟斤拷boolean锟斤拷锟斤拷PHP 也支锟斤拷锟斤拷锟街革拷锟斤拷锟斤拷锟酵o拷锟斤拷锟斤拷投锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷途呖锟斤拷愿锟街碉拷锟斤拷锟斤拷锟斤拷锟斤拷叽雍锟斤拷锟斤拷锟斤拷亍锟�
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FALSE
锟斤拷 TRUE
锟斤拷PHP
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锟斤拷锟斤拷锟斤拷畛o拷玫摹锟�
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$first ? $second : $third
TRUE
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锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟剿涤︼拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷前锟斤拷锟斤拷锟斤拷锟斤拷捅锟斤拷式锟斤拷
<?php
function double($i)
{
return $i*2;
}
$b = $a = 5; /* assign the value five into the variable $a and $b */
$c = $a++; /* post-increment, assign original value of $a
(5) to $c */
$e = $d = ++$b; /* pre-increment, assign the incremented value of
$b (6) to $d and $e */
/* at this point, both $d and $e are equal to 6 */
$f = double($d++); /* assign twice the value of $d before
the increment, 2*6 = 12 to $f */
$g = double(++$e); /* assign twice the value of $e after
the increment, 2*7 = 14 to $g */
$h = $g += 10; /* first, $g is incremented by 10 and ends with the
value of 24. the value of the assignment (24) is
then assigned into $h, and $h ends with the value
of 24 as well. */
?>
一些锟斤拷锟绞斤拷锟斤拷员锟斤拷锟斤拷锟斤拷锟戒。锟斤拷时锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷 'expr' ';'锟斤拷锟斤拷一锟斤拷锟斤拷锟绞斤拷锟揭伙拷锟斤拷趾沤锟轿诧拷锟斤拷锟�"$b=$a=5;"锟叫o拷$a=5 锟斤拷一锟斤拷锟斤拷效锟侥憋拷锟绞斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟戒。"$b=$a=5;"锟斤拷一锟斤拷锟斤拷效锟斤拷锟斤拷洹�
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TRUE
锟斤拷锟斤拷 FALSE
锟斤拷锟斤拷锟斤拷 TRUE
锟斤拷 FALSE
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