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                # php截取字符串 截取中間字符串 $a = 'abcdefghji'; $start = strpos($a,'d'); $end = strrpos($a,'h'); out($start); out($end); out(substr($a,$start,$end+1-$start)); strpbrk() ``` <pre class="calibre13">``` 在字符串中搜索字符 <span class="token4">"Sh"</span>,并返回字符串中從指定字符第一次出現的位置開始的剩余部分: <span class="token"><</span><span class="token">?</span>php echo <span class="token3">strpbrk</span><span class="token1">(</span><span class="token4">"I love Shanghai!"</span><span class="token1">,</span><span class="token4">"Sh"</span><span class="token1">)</span><span class="token1">;</span> <span class="token">?</span><span class="token">></span> Shanghai<span class="token">!</span> ``` ``` strncasecmp() ``` <pre class="calibre13">``` 比較兩個字符串(不區分大小寫): <span class="token3">strncasecmp</span><span class="token1">(</span>string1<span class="token1">,</span>string2<span class="token1">,</span>length<span class="token1">)</span> 參數 描述 string1 必需。規定要比較的第一個字符串。 string2 必需。規定要比較的第二個字符串。 length 必需。規定每個字符串用于比較的字符數。 返回值: 該函數返回: <span class="token5">0</span> <span class="token">-</span> 如果兩個字符串相等 <span class="token"><</span><span class="token5">0</span> <span class="token">-</span> 如果 string1 小于 string2 <span class="token">></span><span class="token5">0</span> <span class="token">-</span> 如果 string1 大于 string2 ``` ``` strpos() ``` <pre class="calibre13">``` 查找 <span class="token4">"php"</span> 在字符串中第一次出現的位置: <span class="token3">strpos</span><span class="token1">(</span><span class="token1">)</span> 函數查找字符串在另一字符串中第一次出現的位置。 <span class="token">*</span> <span class="token3">stripos</span><span class="token1">(</span><span class="token1">)</span> <span class="token">-</span> 查找字符串在另一字符串中第一次出現的位置(不區分大小寫) <span class="token">*</span> <span class="token3">strripos</span><span class="token1">(</span><span class="token1">)</span> <span class="token">-</span> 查找字符串在另一字符串中最后一次出現的位置(不區分大小寫) <span class="token">*</span> <span class="token3">strrpos</span><span class="token1">(</span><span class="token1">)</span><span class="token">-</span> 查找字符串在另一字符串中最后一次出現的位置(區分大小寫) ``` ``` strrpos() stripos() strripos() 字符串處理鏈接: <https://www.runoob.com/php/php-ref-string.html>
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