php 学习笔记 (1)
与java.String对比idjava.Stringphp.String0 equals strcmp 1 substring(start,end) substr(string,start,length) 2 indexOf(str, fromIndex)strpos stripos,strstrstristrstrrpos3 concat(str) (+) (.)4 startsWith 5 endsWith 6 getBytes 7 matches 8 replace str_replace(find, replace, str, count),str_ireplace9 replaceAll 10 split 11 toLowerCase strtolower() 12 toUpperCase strtoupper()13 trim() trim()ltrim()rtrim()14 length strlen 15 md516 formatfprintf
php joinmd5
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