尊龙凯时人生就是博

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ÔÚ laravel ÖУ¬Êý×éÊǺܳ£¼ûµÄÊý¾ÝÀàÐÍ£¬Ðí¶àÇéÐÎÏÂÎÒÃÇÐèÒªÅжÏÒ»¸öÊý×éÊÇ·ñ°üÀ¨Ä³¸öϱê¡£Õâ¸öÎÊÌâ¿´ËƼòÆÓ£¬µ«ÈôÊDz»Ïàʶ laravel ÖеÄÏêϸʵÏÖ£¬¾ÍºÜÈÝÒ׳ö´í¡£±¾ÎĽ«ÏÈÈÝ laravel ÖÐÔõÑùÅжÏÊý×éÊÇ·ñ°üÀ¨Ï±ê¡£

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$array = ['name' => 'John', 'age' => 30];

// ʹÓÃisset()º¯ÊýÅжÏÊý×éÊÇ·ñ°üÀ¨Ï±ê
if (isset($array['name'])) {
    echo 'Name is set.';
} else {
    echo 'Name is not set.';
}

// ʹÓÃarray_key_exists()º¯ÊýÅжÏÊý×éÊÇ·ñ°üÀ¨Ï±ê
if (array_key_exists('age', $array)) {
    echo 'Age is set.';
} else {
    echo 'Age is not set.';
}

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ÔÚ Laravel ÖУ¬¿ÉÒÔʹÓà isset() ¾ÙÐÐÊý×éϱêÅжÏ£¬¿ÉÊÇÔ½·¢ÍƼöʹÓà array_key_exists() º¯Êý¡£ array_key_exists() º¯Êý¿ÉÒÔ½ÓÊÜÁ½¸ö²ÎÊý£¬µÚÒ»¸ö²ÎÊýÊÇÐèÒªÅжϵÄϱêÃû³Æ£¬µÚ¶þ¸ö²ÎÊýÔòÊÇÐèÒª¾ÙÐÐÅжϵÄÊý×é¡£ÆäʹÓ÷½·¨ÈçÏÂËùʾ£º

$array = ['name' => 'John', 'age' => 30];

if (array_key_exists('name', $array)) {
    echo 'Name is set.';
} else {
    echo 'Name is not set.';
}

if (array_key_exists('email', $array)) {
    echo 'Email is set.';
} else {
    echo 'Email is not set.';
}

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