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PHP ÖеÄÊý×éʵ¼ÊÉÏÊÇÒ»¸öÓÐÐòͼ¡£Í¼ÊÇÒ»ÖÖ°Ñ values Ó³Éäµ½ keys µÄÀàÐÍ¡£Òò´Ë¼È¿ÉÒÔ°ÑphpµÄÊý×éµ±×öÆÕͨÊý×éʹÓã¬Ò²¿ÉÒÔÓÃËüÀ´Ä£Äâ×ֵ䡢¼¯ºÏ¡¢Õ»¡¢¶ÓÁС¢Ê÷µÈ¶àÖÖÆäËûÊý¾Ý½á¹¹¡£
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´´½¨Êý×éµÄÒ»°ã¸ñʽΪ£º$arrName = array( [key =>]value, ...)£¬ÆäÖÐkey ¿ÉÒÔÊÇ integer »òÕß string£¬¶øvalue ¿ÉÒÔÊÇÈκÎÖµ¡£
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$arr1 = array('aaa', 'bbb');
$arr2 = array('a'=>'AAA', 'b'=>'BBB');
´´½¨¿ÕÊý×飺$arr = array();
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$arr[0] = 'aaa';
$arr[1] = 'bbb';
foreach($arr as $v){
echo $v;
}
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$arr = array('a'=>'AAA', 'b'=>'BBB');
$arr[] = 'CCC';
2:±éÀúÊý×é
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$arr = array('a'=>'AAA', 0=>'BBB');
foreach($arr as $a){
echo $a;
}
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$array = array(1, 2);
$count = count($array);
for ($i = 0; $i < $count; $i++) {
echo $array[$i];
}
3£ºÇå¿ÕÕû¸öÊý×é
unset($arr);
4£ºÇå¿ÕÖ¸¶¨ÔªËØ
unset($arr[index]);
³£ÓÃÊý×麯Êý
print_r($arr);
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unset();
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$a = array( 1 => 'one', 2 => 'two', 3 => 'three' );
unset( $a[2] );
/* ½«²úÉúÒ»¸öÊý×飬¶¨ÒåΪ
$a = array( 1=>'one', 3=>'three');
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$a = array( 1 => 'one', 2 => 'three');
*/
count()»òÕßsizeof()
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array_pad()
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$arr[1] Óë $arr['1']ÒýÓÃÏàͬµÄÔªËØ£¬µ«Óë arr['01'] ÒýÓò»Í¬ÔªËØ¡£
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$arr['a'] = 'AAA';
$arr['b'] = 'BBB';
echo "array[a] is $arr[a]";
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