?? PHP ?? ????: ???? ????
1. ????
??? ????: d? ???? ?? ??? ?????. ??? ?? 10?? 8?? ???? ???, ??? ?? ? ??? ??? ?? ????
???? ????? ???????. Atom? ??? ? ? ??? ??? ? ??? ?? ??? ????? ??? ????? ?? ?????.
?? ??? ???? ? ?? ??? ????? ????? ???? ???.
?? ??? ??? ???. ??? ??? ??? ??? ?? ?? ??? ? ?? ????. ?? ??? ?? ??? ? ????? ????.
??:
+ ?? ?? ??
<?php
$zz = '/\d+/';
$string = "迪奧和奧迪250都是我最愛";
//待會兒再試試中間沒有0-9的情況
//$string = "迪奧和奧迪都是我最愛";
if(preg_match($zz, $string, $matches)){
echo '匹配到了，結果為：';
var_dump($matches);
}else{
echo '沒有匹配到';
}
?>d+?? +? ???? ??? ??????. d? ??? ???? +? ?? ??? ??? ? ? ?????. ? ?? ??? 0? ?? ?? ? ?????.
<?php
$zz = '/\w*/';
$string = "!@!@!!@#@!$@#!";
//$string1 = "!@#!@#!abcABC#@#!";
if(preg_match($zz, $string, $matches)){
echo '匹配到了，結果為：';
var_dump($matches);
}else{
echo '沒有匹配到';
}
?> ?? ??? $string1? $string? ????? ?????. ???? w? 0-9A-Za-z_? ????, *? ?? w? ???? ??? ???? ?????. ???? ?? 1? ??? ?? ? ????. ? ?? ??? 0? ?? 1? ?????. ?? ??
<?php
$zz = '/ABC\d?ABC/';
$string = "ABC1ABC"
//待會兒再試試中間沒有0-9的情況
//$string1 = "ABC888888ABC";
//$string2 = "ABCABC";
if(preg_match($zz, $string, $matches)){
echo '匹配到了，結果為：';
var_dump($matches);
}else{
echo '沒有匹配到';
}
?> $string, $string2? ????? $string1? ???? ????. ?? ??? ABC? ?? ??? 0~9? ?? ??? 0~9? ??????? 2? ?? ?? ? ????.
.(?)? n
<?php
$zz = '/gg.+gg/';
$string = "ABC1ABC";
if(preg_match($zz, $string, $matches)){
echo '匹配到了，結果為：';
var_dump($matches);
}else{
echo '沒有匹配到';
}
?>? ??? ?? ??? ?????. ?? ?? ?? ???? ?????. ????? gg, 2. |(?? ??) ?? ?? ?? ????
????? ????? ?? ??? ?? ???????. ?? ??<?php
$zz = '/abc|bcd/';
$string1 = "abccd";
$string2 = "ggggbcd";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>????: 1. ??? ?? ??? ??? abccd? abbcd? ???? ??????. ??? $string1? $string2? ????? ?? ??? abc? bcd???. 2. ?? ?? ???? ?? ??? abc ?? bcd???. ?? ??? ????? ????? ?? ????. ??? ?? ??? abccd? abbcd? ?????? ??? ?? ???? ????? ????? ()? ???? ???. ??? ??? ????. <?php
$zz = '/ab(c|b)cd/';
$string1 = "起來abccd閱兵";
$string2 = "ggggbcd";
$string3 = '中國abbcd未來';
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>??? ??? ????. 
??:
1. abccd ?? abbcd($string1 ?? $string3)? ?????. 2. ??? ???? ??? ??? ?? ? ?? ? ??? ??? 13. () ?? ??? ????? ???? ???? ???? ?? ?? 1? ?? ?? ??? ?????.
3. ^(circumflex), ^
<?php
$zz = '/^小明\w+/';
$string1 = "小明abccdaaaasds";
//$string2小明
$string2 = "明abccdaaaasds";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>?? ???? ???? ???. ??? ?? ??? ?? ??? ?????. <… . a-zA-Z0-9_1? ??.
4. $(?? ??)? $
<?php
$zz = '/\d+努力$/';
$string1 = "12321124333努力";
//$string2
$string2 = "12311124112313力";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>
1.$string1? ????? ????? $string2? ????? ???? ?????.
2 .$ ?? ??? d+?? ? ?? ???? ?????.
3. ???? ???? ?? ? ????. d? 0~9? ??? ????, +??? 0~9 ? ?? ??? ???
5. b? B? ?? ??? ??? ??
??? ???? ??? ?????.
1. ????? ??? ????. ? ??? ?? ??? ??? ?? ?? ?????. 2.????? ? ?? ??? ???. ?? ??? ??? ?? ??? ????? ?????.
b ?? ??, ? ? ?? ?? ?????? ?? ?????.
B? ??? ????. ?, ???? ???? ?? ? ? ????.
<?php
$zz = '/\w+\b/';
$string1 = "this is a apple";
$string2 = "thisis a apple";
$string3 = "thisisaapple";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>??: 1.$string1, $string2 ? $string3? ?? ????? ?????. - 2. $string1? ???? ??? ?????.
- 3. $string2? ???? ??? ?????. >
4. $string3? ???? thisisaapple? ?? ?? ???? ?? ????? ????? ???. ??? ??? ?????.
??? ?? ??? ??? ?????.<?php
$zz = '/\Bthis/';
$string1 = "hellothis9";
//$string2 = "hello this9";
//$string2 = "this9中國萬歲";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?> ??: $string1? ????? $string2? ?????.
B ?? this? ?? ??? ?? ??(?? ? ??? ?)?? ??? ? ????.
6. {m}? m?? ??? ? ????.
<?php
$zz = '/喝\d{3}酒/';
$string1 = "喝988酒";
//$string2 = "喝98811酒";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>??: ?? ? d{3}?? ?? 0-9? ? ? ?? ?? ? ??? ?? 3?? ??? ? ??? ??????. 7. {n,m}? n~m? ??? ? ????.
<?php
$zz = '/喝\d{1,3}酒/';
$string1 = "喝9酒";
//$string2 = "喝988酒";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>??: ?? 1 ?? d{1,3}??? 0-9? ? ?, ? ? ?? ? ?? ??? ? ??? ??????. ? ? ??? ?? ????
8.{m,} ?? m?, ?? ?? ??? ????
<?php
$zz = '/喝\d{2,}/';
$string1 = "喝9";
//$string2 = "喝98";
//$string3 = "喝98122121";
if (preg_match($zz, $string1, $matches)) {
echo '匹配到了，結果為：';
var_dump($matches);
} else {
echo '沒有匹配到';
}
?>??:
? ????? d{2,}? ?? 0~9? ?? 2? ?? ????? ????, ?? ???? ??? ????. ??? $string1? ??? ???? $string2? ????? ?????. $string3?(?) ????? ??????.
