ltrim的思考
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说明
string ltrim( string $str[, string $character_mask] )删除字符串开头的空白字符(或其他字符)
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案例1
$test = " deleteeee e ttreee明日科技"; echo ltrim($test, 'delt');
- 结果:
deleteeee e ttreee明日科技
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案例2
$test = " deleteeee e ttreee明日科技"; echo ltrim($test, 'delt ');
- 结果:
deleteeee e ttreee明日科技
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案例3
$test = " deleteeee e ttreee明日科技"; echo ltrim($test, ' delt');
- 结果:
reee明日科技