trim有关问题

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOriginal
2016-06-13 11:25:28940browse

trim问题
echo trim('190012034','http://192.23744924');

为什么输出 00120

echo trim('190012034','http://12.23744924');
为什么也输出 00120


求解答

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