1. array_shift()函数
删除数组中第一个元素,并返回该元素的值。如果数组为空则返回null。
示例:
<span><?php</span><span>$test_arr</span> = <span>array</span> (
<span>"name"</span> => <span>"jeanphorn"</span>,
<span>"skill"</span> => <span>"programming"</span>,
<span>"hobby"</span> => <span>"swimming"</span>,
);
<span>echo</span> array_shift(<span>$test_arr</span>). <span>"\n"</span>;
print_r(<span>$test_arr</span>);
<span>?></span>结果:
jeanphorn Array ( [skill] => programming [hobby] => swimming )
注意: 如果键名是数字的,所有元素都会获得新的键名,从 0 开始,并以 1 递增
2. array_pop()函数
删除数组中的最后一个元素。如果数组为空则返回null。
示例:
<span><?php</span><span>$test_arr</span> = <span>array</span> (
<span>"name"</span> => <span>"jeanphorn"</span>,
<span>"skill"</span> => <span>"programming"</span>,
<span>"hobby"</span> => <span>"swimming"</span>,
);
<span>echo</span> array_pop(<span>$test_arr</span>). <span>"\n"</span>;
print_r(<span>$test_arr</span>);
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以上就介绍了PHP 删除数组第一个元素和最后一个元素,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。











